fix(spm): trailing comma in Package.swift for FirebaseAILogic target (#16162)

Author: ncooke3

FirebaseCore/CHANGELOG.md

@@ -1,3 +1,7 @@
+# Unreleased
+- [fixed] Remove extra comma in Package.swift that caused SPM resolution
+  failures for some configurations.
+
 # Firebase 12.12.0
 - [changed] Firebase now requires at least Xcode 26.2 and the Swift
   6.2.3+ toolchain. This update allows Firebase to leverage new Swift

Package.swift

@@ -195,7 +195,7 @@ let package = Package(
       path: "FirebaseAI/Sources",
       swiftSettings: [
         isFoundationModelsSupportedPlatformSwiftSetting(),
-      ],
+      ]
     ),
     .testTarget(
       name: "FirebaseAILogicUnit",