Fix dependency

Author: intitni

Tool/Package.swift

@@ -81,7 +81,7 @@ let package = Package(
             url: "https://github.com/intitni/generative-ai-swift",
             branch: "support-setting-base-url"
         ),
-        .package(url: "https://github.com/intitni/CopilotForXcodeKit", branch: "custom-chat-tab"),
+        .package(url: "https://github.com/intitni/CopilotForXcodeKit", branch: "feature/custom-chat-tab"),
 
         // TreeSitter
         .package(url: "https://github.com/intitni/SwiftTreeSitter.git", branch: "main"),