ci: Cleanup unused actions

- Remove new workflows yml from 0.64.
- Enable cargo-deny for dependency checks
- Run cargo-deny on main/dev/PR
- Fix internal licenses for cargo-deny
- Fix missing nightly rustfmt

Author: CSRessel

.github/workflows/cargo-deny.yml

@@ -1,6 +1,9 @@
 name: cargo-deny
 
-on: workflow_dispatch
+on:
+  pull_request: {}
+  push:
+    branches: [main, dev]
 
 jobs:
   cargo-deny:
@@ -16,7 +19,10 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
 
       - name: Run cargo-deny
-        uses: EmbarkStudios/cargo-deny-action@v1
+        uses: EmbarkStudios/cargo-deny-action@v2
         with:
-          rust-version: stable
+          rust-version: nightly
           manifest-path: ./codex-rs/Cargo.toml
+          log-level: warn
+          command: check
+          arguments: --all-features

.github/workflows/rust-ci.yml

@@ -32,7 +32,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@1.90
         with:
           targets: ${{ matrix.target }}
-          components: clippy
+          components: clippy, rustfmt
 
       - name: Compute lockfile hash
         id: lockhash