Fix cargo-generate

[Oghma]

.github/workflows/coverage-pr.yml and .github/workflows/semver-checks.yml cause some problems to cargo generate. I have added them to the exluded list.

Error logs:

➜  cargo generate --git https://github.com/NethermindEth/rust-template
🤷   Project Name: stellar-risc0-verifier
🔧   Destination: /Users/oghma/Documents/Work/stellar-risc0-verifier ...
🔧   project-name: stellar-risc0-verifier ...
🔧   Generating template ...
[ 1/41]   Done: .githooks/pre-push                                                                                                                                                                          
[ 2/41]   Done: .githooks                                                                                                                                                                        
[ 3/41]   Done: .github/PULL_REQUEST_TEMPLATE/bugfix.md                                                                                                                                                          
[ 4/41]   Done: .github/PULL_REQUEST_TEMPLATE/choose.md                                                                                                                                                          
[ 5/41]   Done: .github/PULL_REQUEST_TEMPLATE/feature.md                                                                                                                                                         
[ 6/41]   Done: .github/PULL_REQUEST_TEMPLATE                                                                                                                                                                    
[ 7/41]   Done: .github/workflows/build-and-test.yml                                                                                                                                                             
[ 9/41]   Done: .github/workflows/coverage.yml                                                                                                                                                                   
[10/41]   Skipped: .github/workflows/dependency-audit.yml                                                                                                                                                        
[11/41]   Done: .github/workflows/docs.yml                                                                                                                                                                       
[12/41]   Done: .github/workflows/linter.yml                                                                                                                                                                     
[14/41]   Done: .github/workflows/ub-detection.yml                                                                                                                                                               
[15/41]   Done: .github/workflows                                                                                                                                                                                
[16/41]   Done: .github                                                                                                                                                                                          
[17/41]   Done: .gitignore                                                                                                                                                                                       
[18/41]   Done: CODEOWNERS                                                                                                                                                                                       
[19/41]   Done: CONTRIBUTING.md                                                                                                                                                                                  
[20/41]   Done: Cargo.toml                                                                                                                                                                                       
[21/41]   Done: LICENSE                                                                                                                                                                                          
[22/41]   Done: README.md                                                                                                                                                                                        
[23/41]   Done: SECURITY.md                                                                                                                                                                                      
[24/41]   Done: _typos.toml                                                                                                                                                                                      
[25/41]   Done: deny.toml                                                                                                                                                                                        
[26/41]   Done: examples/Cargo.toml                                                                                                                                                                              
[27/41]   Done: examples/README.md                                                                                                                                                                               
[28/41]   Done: examples/src/bin/addition.rs                                                                                                                                                                     
[29/41]   Done: examples/src/bin                                                                                                                                                                                 
[30/41]   Done: examples/src                                                                                                                                                                                     
[31/41]   Done: examples                                                                                                                                                                                         
[32/41]   Done: katex-header.html                                                                                                                                                                                
[33/41]   Done: rust-toolchain.toml                                                                                                                                                                              
[34/41]   Done: rustfmt.toml                                                                                                                                                                                     
[35/41]   Done: template_crate/Cargo.toml                                                                                                                                                                        
[36/41]   Done: template_crate/README.md                                                                                                                                                                         
[37/41]   Done: template_crate/doc/mainpage-doc.md                                                                                                                                                               
[38/41]   Done: template_crate/doc                                                                                                                                                                               
[39/41]   Done: template_crate/src/lib.rs                                                                                                                                                                        
[40/41]   Done: template_crate/src                                                                                                                                                                               
[41/41]   Done: template_crate                                                                                                                                                                                   
Error: Substitution skipped, found invalid syntax in
        .github/workflows/coverage-pr.yml
        .github/workflows/semver-checks.yml

Consider adding these files to a `cargo-generate.toml` in the template repo to skip substitution on these files.

Learn more: https://github.com/cargo-generate/cargo-generate#include--exclude.

[maksimryndin]

lgtm