Replace dependabot with renovate

Author: dlsf

.github/dependabot.yml

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "automerge": true,
+  "autoApprove": true
+}