Rename the msrv job to indicate it tests

.github/workflows/ci.yaml

@@ -385,8 +385,8 @@ jobs:
       - name: "Build"
         run: cargo build --release --locked
 
-  cargo-build-msrv:
-    name: "cargo build (msrv)"
+  cargo-test-msrv:
+    name: "cargo test (msrv)"
     runs-on: depot-ubuntu-latest-8
     needs: determine_changes
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}