Upgrade to Xcode 13 on Circle CI

Author: pmusolino

.circleci/config.yml

@@ -15,15 +15,15 @@ parameters:
     default: false
 
 xcode_version: &xcode_version
-  xcode-version: "12.5.0"
+  xcode-version: "13.0.0"
 
 iphone_test_device: &iphone_test_device
-  device: iPhone 11
-  ios-version: "14.4"
+  device: iPhone 13
+  ios-version: "15.0"
 
 ipad_test_device: &ipad_test_device
   device: iPad Air (4th generation)
-  ios-version: "14.4"
+  ios-version: "15.0"
 
 commands:
   fix-image:
@@ -38,7 +38,7 @@ commands:
               echo "Manually added `/usr/local/bin` to the $PATH:"
               echo $PATH
             fi
-            chruby ruby-2.6.6
+            chruby ruby-2.7.4
             gem install bundler
 
             # Add support for fetching SPM packages from GitHub

.xcversion

@@ -1 +1 @@
-12.5
+13.0