Merge #30: ci: update MSRV to 1.81 to work with new dependencies

c7c71a0 ci: update MSRV to 1.81 to work with new dependencies (Steve Myers)

Pull request description:

  ### Description

  I picked this new MSRV because it's the lowest that supports the new dependencies added in #29.

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/notmandatory/rust-cktap/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

Top commit has no ACKs.

Tree-SHA512: baea49e8fc482aab43795585932233d0fbf1e2ec5dc59d847ad7c4813187f1dc393375f9f0c3409bb79655a15a4435b1e6a986054ff757afc57cadead14e2d67

Author: notmandatory

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
       matrix:
         rust:
           - version: stable
-          - version: 1.56.0 # MSRV
+          - version: 1.81.0 # MSRV
             msrv: true
         features:
           - --no-default-features

README.md

@@ -67,6 +67,12 @@ cargo run -p cktap-cli -- certs
 cargo run -p cktap-cli -- read
 ```
 
+## Minimum Supported Rust Version (MSRV)
+
+This library should always compile with any valid combination of features on Rust **1.81.0**.
+
+
+
 [SATSCARD]: https://satscard.com/
 [TAPSIGNER]: https://tapsigner.com/
 [SATSCHIP]: https://satschip.com/

clippy.toml

@@ -1 +1 @@
-msrv="1.56.0"
+msrv="1.81.0"