fix(deps): update ghcr.io/renovatebot/renovate docker tag to v38

.forgejo/workflows/renovate.yaml

@@ -1,9 +1,6 @@
 on:
   schedule:
     - cron: '*/30 * * * *'
-  push:
-    branches: ["main"]
-    paths: [".forgejo/workflows/renovate.yaml"]
   # workflow_dispatch:
   #   inputs:
   #     dryRun:
@@ -23,13 +20,7 @@ jobs:
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
         with:
           show-progress: false
-      - name: Write ssh key
-        id: sshkey
-        uses: https://github.com/timheuer/base64-to-file@v1
-        with:
-          encodedString: "${{ secrets.SSH_USER }}"
-          fileName: id_ed25519
-          fileDir: ~/.ssh
+
       - name: Renovate
         uses: ./.forgejo/actions/renovate
         with: