Update renovatebot/github-action action to v39

Author: renovate-rancher[bot]

.github/workflows/renovate.yaml

@@ -23,7 +23,7 @@ jobs:
           installation_id: ${{ secrets.RENOVATE_INSTALLATION_ID }}
           private_key: ${{ secrets.RENOVATE_PRIVATE_KEY }}
       - name: Self-hosted Renovate
-        uses: renovatebot/github-action@c56dbeca772b331ddf18eefad8b93f0f3c69d34a # v34.159.2
+        uses: renovatebot/github-action@5e224f3a02c7ce9cadc83f82d65f1b6dd73876c1 # v39.0.3
         env:
           # Repository taken from variable to keep configuration file generic
           RENOVATE_REPOSITORIES: ${{ github.repository }}