ci: pin actions/create-github-app-token action to v3 (#112)

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

Author: renovate[bot]

.github/workflows/release-please.yml

@@ -20,7 +20,7 @@ jobs:
       # Generating a GitHub token, so that PRs and tags created by
       # the release-plz-action can trigger actions workflows.
       - name: Generate GitHub token
-        uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3
+        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3
         id: generate-token
         with:
           app-id: ${{ secrets.RELEASE_BOT_APP_ID }}