Bump xcode version for ios_tests job

Author: DavidMina96

.circleci/config.yml

@@ -89,7 +89,7 @@ jobs:
 
    ios_tests:
     macos:
-      xcode: "12.3.0"
+      xcode: "13.4.1"
     working_directory: ~/project/example
     environment:
       FL_OUTPUT_DIR: output
@@ -115,7 +115,7 @@ jobs:
           command: cd ios && pod install --repo-update
       - run:
           name: Build and run tests
-          command: cd ios && xcodebuild  -allowProvisioningUpdates   -workspace Runner.xcworkspace   -scheme Runner   -sdk iphonesimulator   -destination 'platform=iOS Simulator,name=iPhone 12 Pro Max,OS=14.3'   test | xcpretty
+          command: cd ios && xcodebuild  -allowProvisioningUpdates   -workspace Runner.xcworkspace   -scheme Runner   -sdk iphonesimulator   -destination 'platform=iOS Simulator,name=iPhone 13 Pro Max,OS=15.5'   test | xcpretty
 
    pub_release:
     docker: