COMP: Migrate macos runners from macos-13 to macos-15-intel

macos-13 (an Intel runner) will not be available after December 2025.

Note: on Azure Pipelines macos-15 is also an Intel runner.

Author: thewtex

.github/workflows/pixi.yml

@@ -32,7 +32,7 @@ jobs:
       timeout-minutes: 0
       strategy:
         matrix:
-          os: [ubuntu-22.04, windows-2022, macos-13, macos-14]
+          os: [ubuntu-22.04, windows-2022, macos-15-intel, macos-14]
       steps:
         - name: Checkout
           uses: actions/checkout@v4

Testing/ContinuousIntegration/AzurePipelinesMacOS.yml

@@ -31,8 +31,7 @@ jobs:
   timeoutInMinutes: 0
   cancelTimeoutInMinutes: 300
   pool:
-    # https://github.com/actions/runner-images?tab=readme-ov-file#available-images
-    vmImage: macos-13
+    vmImage: macos-15
   steps:
     - checkout: self
       clean: true

Testing/ContinuousIntegration/AzurePipelinesMacOSPython.yml

@@ -31,8 +31,7 @@ jobs:
   timeoutInMinutes: 0
   cancelTimeoutInMinutes: 300
   pool:
-    # https://github.com/actions/runner-images?tab=readme-ov-file#available-images
-    vmImage: macos-13
+    vmImage: macos-15
   steps:
     - checkout: self
       clean: true