chore: Update renovatebot/github-action action to v43

Author: grafanarenovatebot[bot]

actions/renovate/action.yaml

@@ -57,7 +57,7 @@ runs:
         owner: ${{ github.repository_owner }}
 
     - name: Self-hosted Renovate
-      uses: renovatebot/github-action@8058cfe11252651a837a58e2e3370fbc0e72c658 # v42.0.4
+      uses: renovatebot/github-action@13f127373fd3dc43b41b0979e37ba570d6c2b8f4 # v43.0.0
       with:
         renovate-version: ${{ inputs.renovate-version }}
         token: ${{ steps.app-token.outputs.token }}