Try substitition for disallowed github workflow step ana06/[email protected].

Author: joseph-klein

.github/workflows/check_diffs.yml

@@ -27,8 +27,21 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: '3.10'
-      - id: files
-        uses: Ana06/[email protected]
+      - id: get_changed_files
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const pr = await github.rest.pulls.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.payload.pull_request.number
+            });
+            const files = await github.paginate(github.rest.pulls.listFiles, {
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.payload.pull_request.number
+            });
+            core.setOutput('files', files.map(f => f.filename).join('\n'));
       - id: set-matrix
         run: |
           python .github/scripts/check_diff.py ${{ steps.files.outputs.all }} >> $GITHUB_OUTPUT