ci: update renovatebot config

Author: lotyp

.github/renovate.json

@@ -0,0 +1,16 @@
+{
+    "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+    "extends": [
+        "config:base",
+        ":semanticCommitTypeAll(deps)"
+    ],
+    "prHourlyLimit": 0,
+    "automerge": true,
+    "platformAutomerge": true,
+    "lockFileMaintenance": {
+        "enabled": true,
+        "automerge": true,
+        "automergeType": "pr",
+        "platformAutomerge": true
+    }
+}