chore(deps): update zgosalvez/github-actions-ensure-sha-pinned-actions action to v3.0.21

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/lint.github-action.yml

@@ -24,4 +24,4 @@ jobs:
           bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
           ./actionlint -color
       - name: Ensure SHA pinned actions
-        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@5d6ac37a4cef8b8df67f482a8e384987766f0213 # v3.0.17
+        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@6eb1abde32fed00453b0d03497f4ba4fecba146d # v3.0.21