Merge pull request #424 from rajbos/copilot/add-actionlint-workflow

Add actionlint workflow to lint GitHub Actions workflows

Author: rajbos

.github/workflows/actionlint.yml

@@ -0,0 +1,28 @@
+name: actionlint
+
+on:
+  push:
+    paths:
+      - '.github/workflows/**'
+  pull_request:
+    paths:
+      - '.github/workflows/**'
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  run-actionlint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@58077d3c7e43986b6b15fba718e8ea69e387dfcc # v2.15.1
+        with:
+          egress-policy: audit
+
+      - name: Checkout code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Run actionlint
+        uses: devops-actions/actionlint@469810fd82c015d3c43815cd2b0e4d02eecc4819 # v0.1.11