feat: configure renovate (#4)

* feat: configure renovate

* chore: remove dependency pin that is unnecessary

Author: fritogotlayed

renovate.json

@@ -0,0 +1,17 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": ["config:recommended"],
+  "prConcurrentLimit": 5,
+  "packageRules": [
+    {
+      "matchUpdateTypes": ["minor", "patch", "pin", "digest"],
+      "matchDatasources": ["npm"],
+      "automerge": true,
+      "automergeType": "pr"
+    }
+  ],
+  "lockFileMaintenance": {
+    "enabled": true,
+    "automerge": true
+  }
+}