ci: update googlecloudplatform/release-please-action action to v5 (#271)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release-please.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - id: release
-        uses: GoogleCloudPlatform/release-please-action@5c625bfb5d1ff62eadeeb3772007f7f66fdcf071 # v4
+        uses: GoogleCloudPlatform/release-please-action@45996ed1f6d02564a971a2fa1b5860e934307cf7 # v5
         with:
           token: ${{ secrets.GITHUB_TOKEN }}