feat(renovate): Automerge patch updates automatically to develop without MR

.gitlab/renovate.json

@@ -1,6 +1,7 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "prConcurrentLimit": 1,
+  "branchConcurrentLimit": 5,
   "ignoreDeps": ["$CI_REGISTRY/funkwhale/backend-test-docker"],
   "rangeStrategy": "pin",
   "lockFileMaintenance": { "enabled": true },
@@ -21,7 +22,8 @@
     {
       "matchUpdateTypes": ["patch", "pin", "digest"],
       "matchBaseBranches": ["develop"],
-      "automerge": true
+      "automerge": true,
+      "automergeType": "branch"
     },
     {
       "matchManagers": ["npm"],