chore(deps-dev): update zgosalvez/github-actions-ensure-sha-pinned-actions action to v3.0.20 (#130)

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

Author: renovate[bot]

.github/workflows/pr-actions.yaml

@@ -19,7 +19,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Ensure SHA pinned actions
-        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@6ae615f6475d2ede5ad88bea6baa7a1d5e93ffaa # v3.0.19
+        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