feat(ios) use Xcode 16 as the new baseline

.github/workflows/ci.yml

     strategy:
       fail-fast: false
       matrix:
-        os: [macos-13, macos-14]
+        os: [macos-14]
     steps:
     - uses: actions/checkout@v4
     - uses: actions/setup-node@v4
       run: |
         uname -a
         xcode-select -p
-        sudo xcode-select -s /Applications/Xcode_15.2.app/Contents/Developer
+        sudo xcode-select -s /Applications/Xcode_16.0.app/Contents/Developer
         xcodebuild -version
     - name: setup-cocoapods
       uses: maxim-lobanov/setup-cocoapods@v1

ios/app/app.xcodeproj/project.pbxproj

 			baseConfigurationReference = 756FCE06C08D9B947653C98A /* Pods-JitsiMeet.debug.xcconfig */;
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
-				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIconDebug;
 				CODE_SIGN_ENTITLEMENTS = app.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 			baseConfigurationReference = 3E0F4ED943C0B12BE77F6B45 /* Pods-JitsiMeet.release.xcconfig */;
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
-				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIconRelease;
 				CODE_SIGN_ENTITLEMENTS = app.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";

ios/sdk/sdk.xcodeproj/project.pbxproj

 			baseConfigurationReference = 09A78016288AF50ACD28A10D /* Pods-JitsiMeetSDK.debug.xcconfig */;
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = NO;
-				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 			baseConfigurationReference = 891FE43DAD30BC8976683100 /* Pods-JitsiMeetSDK.release.xcconfig */;
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = NO;
-				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 			baseConfigurationReference = 8F48C340DE0D91D1012976C5 /* Pods-JitsiMeetSDKLite.debug.xcconfig */;
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = NO;
-				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 			baseConfigurationReference = 86389F55993FAAF6AEB3FA3E /* Pods-JitsiMeetSDKLite.release.xcconfig */;
 			buildSettings = {
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = NO;
-				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";