Add renovate deps groups (#2417)

Co-authored-by: Patrick Schratz <patrick.schratz@gmail.com>

.github/renovate.json

@@ -0,0 +1,30 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": ["config:recommended", ":maintainLockFilesWeekly"],
+  "prConcurrentLimit": 5,
+  "packageRules": [
+    {
+      "groupName": "golang deps non-major",
+      "matchManagers": ["gomod"],
+      "matchUpdateTypes": ["minor", "patch"],
+      "extends": ["schedule:daily"],
+      "labels": ["dependencies"]
+    },
+    {
+      "groupName": "web npm deps non-major",
+      "matchManagers": ["npm"],
+      "matchUpdateTypes": ["minor", "patch"],
+      "matchFileNames": ["web/package.json"],
+      "extends": ["schedule:daily"],
+      "labels": ["dependencies"]
+    },
+    {
+      "groupName": "docs npm deps non-major",
+      "matchManagers": ["npm"],
+      "matchUpdateTypes": ["minor", "patch"],
+      "matchFileNames": ["docs/**/package.json"],
+      "extends": ["schedule:daily"],
+      "labels": ["dependencies"]
+    }
+  ]
+}