Update renovatebot/github-action action to v41.0.21 (#240)

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

Author: renovate[bot]

.github/workflows/renovate.yml

@@ -21,7 +21,7 @@ jobs:
       uses: astral-sh/setup-uv@22695119d769bdb6f7032ad67b9bca0ef8c4a174 # v5
 
     - name: Self-hosted Renovate
-      uses: renovatebot/github-action@19e3d87179488d6a0cd9da744d37123ea4b338e5 # v41.0.20
+      uses: renovatebot/github-action@fdbe2b88946ea8b6fb5785a5267b46677d13a4d2 # v41.0.21
       with:
         configurationFile: renovate-config.json
         token: ${{ secrets.GITHUB_TOKEN }}