chore(deps-dev): update zgosalvez/github-actions-ensure-sha-pinned-actions action to v3.0.15

Author: renovate[bot]

.github/workflows/pr-actions.yaml

@@ -19,7 +19,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
       - name: Ensure SHA pinned actions
-        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@40ba2d51b6b6d8695f2b6bd74e785172d4f8d00f # v3.0.14
+        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@ed00f72a3ca5b6eff8ad4d3ffdcacedb67a21db1 # v3.0.15
         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