Switched Dependabot package manager from pip to uv

Author: Rafi-Microsoft

.github/dependabot.yml

@@ -14,8 +14,8 @@ updates:
         patterns:
           - "*"
 
-  # pip dependencies (grouped)
-  - package-ecosystem: "pip"
+  # uv dependencies (grouped)
+  - package-ecosystem: "uv"
     directory: "/src/ContentProcessorAPI"
     schedule:
       interval: "monthly"
@@ -24,7 +24,7 @@ updates:
     target-branch: "dependabotchanges"
     open-pull-requests-limit: 10
     groups:
-      all-pip-deps:
+      all-uv-deps:
         patterns:
           - "*"