chore: add dependabot.yml

Author: ahal

.github/dependabot.yml

@@ -0,0 +1,19 @@
+---
+version: 2
+updates:
+  - package-ecosystem: uv
+    directory: "/"
+    versioning-strategy: increase-if-necessary
+    schedule:
+      interval: weekly
+    open-pull-requests-limit: 5
+    groups:
+      deps:
+        applies-to: version-updates
+        patterns:
+          - "*"
+        update-types:
+          - "minor"
+          - "patch"
+    commit-message:
+      prefix: "chore(deps)"