Update .github/workflows/actionlint.yml

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: Judahmeek

.github/workflows/actionlint.yml

@@ -33,8 +33,19 @@ jobs:
       - name: Check GitHub Action changes
         id: check-workflows
         run: |
-          git fetch origin ${{ github.event.pull_request.base.sha }}
-          if git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.sha }} | grep -q '^.github/workflows'; then
+          BASE_SHA="${{ github.event.pull_request.base.sha || github.event.before }}"
+          if [ -n "$BASE_SHA" ]; then
+            git fetch origin "$BASE_SHA" 2>/dev/null || true
+          fi
+          
+          # For PRs, diff against base; for pushes, use before commit
+          if [ -n "${{ github.event.pull_request.base.sha }}" ]; then
+            DIFF_BASE="${{ github.event.pull_request.base.sha }}"
+          else
+            DIFF_BASE="${{ github.event.before }}"
+          fi
+          
+          if git diff --name-only "$DIFF_BASE" ${{ github.sha }} 2>/dev/null | grep -q '^.github/workflows'; then
             echo "changed=true" >> "$GITHUB_OUTPUT"
             response=$(curl -sf https://api.github.com/repos/rhysd/actionlint/releases/latest)
             if [ $? -eq 0 ]; then