More automerge tries (#13)

NB: `"automerge": true,` only applies to this repo.

It might still be that automerge is not working due to [committer restriction](https://docs.renovatebot.com/key-concepts/automerge/#required-pull-request-reviews).

@lunny Could this be relaxed for the bot? I.e. it might be needed to remove the "review required" protection for this repo only given that Gitea doesn't have a whitelist feature such as GH has letting certain users bypass the requirement.

Reviewed-on: https://gitea.com/gitea/renovate-config/pulls/13
Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-committed-by: pat-s <patrick.schratz@gmail.com>

renovate.json

@@ -5,6 +5,8 @@
   "enabledManagers": [
     "github-actions"
   ],
+  "automerge": true,
+  "ignoreTests": true,
   "packageRules": [
     {
       "description": "use fix scope for renovate updates",