Add cargo-semver-checks

.github/workflows/check.yml

@@ -59,6 +59,19 @@ jobs:
         with:
           reporter: 'github-pr-check'
           github_token: ${{ secrets.GITHUB_TOKEN }}
+  semver:
+    runs-on: ubuntu-latest
+    name: semver
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+      - name: Install stable
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+      - name: cargo-semver-checks
+        uses: obi1kenobi/cargo-semver-checks-action@v2
   doc:
     # run docs generation on nightly rather than stable. This enables features like
     # https://doc.rust-lang.org/beta/unstable-book/language-features/doc-cfg.html which allows an