fixing osx ci (dotnet#7279)

Author: michaelgsharp

build/ci/job-template.yml

@@ -71,7 +71,7 @@ jobs:
         displayName: Install MacOS build dependencies
     # Extra Apple MacOS step required to install OS-specific dependencies
     - ${{ if and(contains(parameters.pool.vmImage, 'macOS'), contains(parameters.name, 'cross'))  }}:
-      - script: brew update && brew install -f --overwrite python@3.12 && brew install libomp && brew link libomp --force
+      - script: brew update && brew install -f --overwrite python@3.13 && brew install libomp && brew link libomp --force
         displayName: Install MacOS ARM build dependencies
     - ${{ if and( eq(parameters.nightlyBuild, 'true'), eq(parameters.pool.vmImage, 'ubuntu-18.04')) }}:
       - bash: echo "##vso[task.setvariable variable=LD_LIBRARY_PATH]$(nightlyBuildRunPath):$LD_LIBRARY_PATH"