Bump project objectVersion 90 → 100

Xcode upgraded the project format on open. Matches upstream
NativeAppTemplate-iOS#87.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: dadachi

NativeAppTemplate.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 90;
+	objectVersion = 100;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -868,7 +868,7 @@
 				0182D36E25B258A7001E881D /* XCRemoteSwiftPackageReference "KeychainAccess" */,
 				012009F6299F1E190078A1F9 /* XCRemoteSwiftPackageReference "swift-collections" */,
 			);
-			preferredProjectObjectVersion = 90;
+			preferredProjectObjectVersion = 100;
 			productRefGroup = 011F6DEE259EF16400BED22E /* Products */;
 			projectDirPath = "";
 			projectRoot = "";