Test crate on stated Minimum Supported Rust Version

Author: thejpster

.github/workflows/build.yml

@@ -12,12 +12,26 @@ jobs:
       - uses: actions/checkout@v4
       - run: cargo build --verbose
 
+  build-msrv:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: rustup toolchain install 1.61
+      - run: cargo +1.61 build --verbose
+
   test:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - run: cargo test --verbose
 
+  test-msrv:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: rustup toolchain install 1.61
+      - run: cargo +1.61 test --verbose
+
   format-check:
     runs-on: ubuntu-latest
     steps: