chore(deps): update renovate/renovate docker tag to v43.263.6

Signed-off-by: Renovate Bot <renovate-bot@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/validate-renovate-config.yaml

@@ -14,7 +14,7 @@ jobs:
     name: Validate renovate config
     runs-on: ubuntu-latest
     container:
-      image: renovate/renovate:43.258.0@sha256:eebc7b62df7917148cfe075e351b10a8d76d80932930a6a03d2cfc4a2229fae6
+      image: renovate/renovate:43.263.6@sha256:98ec7a9df71f91f1d137cfb26c6028e55b2e8c5adf8fcb70201eceb6d361834e
       options: --user root
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0