Migrate to Renovate

Dependabot doesn't properly support uv

Author: ulgens

.github/dependabot.yml

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