chore(deps): update renovatebot/github-action action to v43.0.12 (#1331)

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@6927a58a017ee9ac468a34a5b0d2a9a9bd45cac3 # v43.0.11
+        uses: renovatebot/github-action@f8af9272cd94a4637c29f60dea8731afd3134473 # v43.0.12
         with:
           configurationFile: .github/renovate-config.json5
           # renovate: datasource=docker depName=ghcr.io/renovatebot/renovate