use a workflow to get changed files

.github/workflows/workflow-linter.yml

@@ -28,30 +28,21 @@ jobs:
           repository: ${{ steps.repo.outputs.repo }}
           fetch-depth: 0
 
-      - name: Get changed workflows
+      - name: Get changed files
         id: changed-workflows
-        run: |
-          MODIFIED_WORKFLOWS=$(git diff --name-only origin/${{ github.base_ref	}} | grep -E '.github/workflows/.*.(yml|yaml)' | tr '\n' ' ')
-          MODIFIED_EXISTING_WORKFLOWS=""
-          COUNT=0
-          for workflow in $MODIFIED_WORKFLOWS; do
-              if [ -f $workflow ]; then
-                  MODIFIED_EXISTING_WORKFLOWS+=" ${workflow}"
-                  COUNT=$((COUNT+1))
-              fi
-          done
-          echo "count=$COUNT" >> $GITHUB_OUTPUT
-          echo "modified-workflows=$MODIFIED_EXISTING_WORKFLOWS" >> $GITHUB_OUTPUT
+        uses: tj-actions/changed-files@c3a1bb2c992d77180ae65be6ae6c166cf40f857c # v45.0.3
+        with:
+          files: .github/workflows/**
 
       - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
           python-version: "3.11"
 
       - name: Install bwwl binary
-        if: steps.changed-workflows.outputs.count != 0
+        if: steps.changed-workflows.outputs.all_changed_files_count != 0
         run: python -m pip install --upgrade bitwarden_workflow_linter
 
       - name: Lint
-        if: steps.changed-workflows.outputs.count != 0
+        if: steps.changed-workflows.outputs.all_changed_files_count != 0
         run: bwwl lint -f .github/workflows