Merge pull request #143 from feltech/work/OpenAssetIO/1480-macosRunnerVersion

[CI] Bump MacOS GitHub runner version

Author: feltech

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ['windows-2022', 'ubuntu-22.04', 'macos-13']
+        os: ['windows-2022', 'ubuntu-22.04', 'macos-15-intel']
         python: ['3.10', '3.11']
     steps:
       - uses: actions/checkout@v6