chore(deps): update renovatebot/github-action action to v43.0.8 (#1242)

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@85b17ebd5abf43d1c34c01bd4c8dbb8d45bbc2c7 # v43.0.7
+        uses: renovatebot/github-action@b11417b9eaac3145fe9a8544cee66503724e32b6 # v43.0.8
         with:
           configurationFile: .github/renovate-config.json5
           # renovate: datasource=docker depName=ghcr.io/renovatebot/renovate