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

Author: renovate[bot]

.github/workflows/pr-actions.yaml

@@ -19,7 +19,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Ensure SHA pinned actions
-        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@99589360fda82ecfac331cc6bfc9d7d74487359c # v2.1.6
+        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@c3a2b64f69b7a1542a68f44d9edbd9ec3fc1455e # v3.0.20
         with:
           # slsa-github-generator requires using a semver tag for reusable workflows. 
           # See: https://github.com/slsa-framework/slsa-github-generator#referencing-slsa-builders-and-generators