chore: switch dependabot from pip to uv (#554)

Author: Lash-L

.github/dependabot.yml

@@ -6,7 +6,7 @@ updates:
     schedule:
       interval: "weekly"
 
-  - package-ecosystem: "pip"
+  - package-ecosystem: "uv"
     directory: "/"
     schedule:
       interval: "weekly"