update workflows

Author: mw-kapilg

.circleci/CrossPlatformBuilder.yml

@@ -10,7 +10,7 @@ executors:
       image: default
   macos:
     macos:
-      xcode: 15.4.0
+      xcode: 16.4.0
   windows:
     win/default
 

.circleci/TestSplitting.yml

@@ -10,7 +10,7 @@ executors:
       image: default
   macos:
     macos:
-      xcode: 15.4.0
+      xcode: 16.4.0
   windows:
     win/default
 
@@ -20,6 +20,8 @@ jobs:
       os:
         type: executor
     executor: << parameters.os >>
+    # Use parallelism to split tests across multiple containers
+    parallelism: 2
     steps:
       - checkout
 
@@ -29,11 +31,12 @@ jobs:
             MATLAB_Compiler_SDK
             MATLAB_Test
       
-      # Builds Python package from MATLAB function
+      # Builds mex file and Python package from MATLAB function
       - matlab/run-build:
           tasks: mex buildPythonPackage
 
-      - - matlab/run-tests:
+      # Run MATLAB tests, splitting them across parallel containers
+      - matlab/run-tests:
           select-by-name: $(circleci tests glob "tests/**/*.m" | circleci tests split | awk -F'[\\\\/.]' '{print $(NF-1) "/*"}')
 
 workflows:

.circleci/ToolboxDistribution.yml

@@ -11,7 +11,7 @@ executors:
       image: default
   macos:
     macos:
-      xcode: 15.4.0
+      xcode: 16.4.0
   windows:
     win/default