ci: move commitlint into its own separate workflow

This way it doesn't prevent other tests from running

Author: cwillisf

.github/workflows/ci.yml

@@ -21,7 +21,6 @@ jobs:
         with:
           cache: 'npm'
           node-version-file: '.nvmrc'
-      - uses: wagoid/commitlint-github-action@9763196e10f27aef304c9b8b660d31d97fce0f99 # v5
       - name: Debug info
         run: |
           cat <<EOF

.github/workflows/commitlint.yml

@@ -0,0 +1,9 @@
+name: Lint commit messages
+on: [pull_request]
+
+jobs:
+  commitlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+      - uses: wagoid/commitlint-github-action@5ce82f5d814d4010519d15f0552aec4f17a1e1fe # v5