Move microsoft-extensions-ai group to top of groups section

Co-authored-by: eiriktsarpalis <[email protected]>

Author: Copilot

.github/dependabot.yml

@@ -14,16 +14,16 @@ updates:
     # Dependencies are controlled via the groups below
     # Group testing dependencies to reduce PR noise
     groups:
+      microsoft-extensions-ai:
+        patterns:
+          - "Microsoft.Extensions.AI.*"
       testing-frameworks:
         patterns:
           - "xunit.*"
           - "Microsoft.NET.Test.Sdk"
           - "coverlet.*"
           - "GitHubActionsTestLogger"
           - "Moq"
-      microsoft-extensions-ai:
-        patterns:
-          - "Microsoft.Extensions.AI.*"
       microsoft-extensions-testing:
         patterns:
           - "Microsoft.Extensions.DependencyInjection"