chore(deps): update renovatebot/github-action action to v43 (#1084)

Co-authored-by: grafanarenovatebot[bot] <146220760+grafanarenovatebot[bot]@users.noreply.github.com>

Author: grafanarenovatebot[bot]

.github/workflows/renovate.yml

@@ -76,7 +76,7 @@ jobs:
           private-key: ${{ env.GRAFANA_RENOVATE_PRIVATE_KEY }}
 
       - name: Self-hosted Renovate
-        uses: renovatebot/github-action@8ac70de2fe55752c573155866e30735411e3b61c # v41.0.22
+        uses: renovatebot/github-action@13da59cf7cfbd3bfea72ce26752ed22edf747ce9 # v43.0.2
         with:
           configurationFile: .github/renovate-config.json5
           # renovate: datasource=docker depName=ghcr.io/renovatebot/renovate