ci(deps): update renovate docker tag to v38.91.0

| datasource | package                      | from    | to      |
| ---------- | ---------------------------- | ------- | ------- |
| docker     | ghcr.io/renovatebot/renovate | 38.89.3 | 38.91.0 |

Author: renovate[bot]

.github/workflows/build.yml

@@ -11,7 +11,7 @@ concurrency:
 
 env:
   NODE_VERSION: 20
-  RENOVATE_VERSION: 38.89.3 # renovate: datasource=docker depName=renovate packageName=ghcr.io/renovatebot/renovate
+  RENOVATE_VERSION: 38.91.0 # renovate: datasource=docker depName=renovate packageName=ghcr.io/renovatebot/renovate
 
 jobs:
   commitlint: