chore: Renovate: allow major updates (#4572)

* Update Renovate config: allow major updates

* Ignore automerge preset

Author: oleg-kozlyuk-grafana

renovate.json

@@ -1,16 +1,16 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": ["config:best-practices"],
+  "extends": ["github>grafana/grafana-renovate-config/renovate.json"],
+  "ignorePresets": [
+    "github>grafana/grafana-renovate-config//presets/automerge"
+  ],
   "timezone": "UTC",
   "schedule": ["before 4am on monday"],
   "prConcurrentLimit": 10,
   "ignoreDeps": [],
+  "separateMajorMinor": true,
+  "separateMultipleMajor": true,
   "packageRules": [
-    {
-      "description": "Ignore major updates for all dependencies",
-      "matchUpdateTypes": ["major"],
-      "enabled": false
-    },
     {
       "description": "Group all Go module updates (main project)",
       "matchManagers": ["gomod"],
@@ -32,11 +32,6 @@
       "groupName": "docker",
       "schedule": ["before 4am on the first day of the month"]
     },
-    {
-      "description": "Dev containers updates",
-      "matchManagers": ["devcontainer"],
-      "schedule": ["before 4am on monday"]
-    },
     {
       "description": "Group all GitHub Actions updates",
       "matchManagers": ["github-actions"],