Move to macos14 (#14137)

Author: nohwnd

azure-pipelines-official.yml

@@ -55,7 +55,7 @@ parameters:
     image: 1es-ubuntu-2204
     os: linux
   - name: Azure Pipelines
-    image: macOS-12
+    image: macos-14
     os: macOS
 
 variables:

azure-pipelines.yml

@@ -157,7 +157,7 @@ stages:
               vmImage: ubuntu-22.04
               pwsh: true
             macOS_12:
-              vmImage: macOS-12
+              vmImage: macos-14
               pwsh: true
         pool:
           vmImage: $[ variables['vmImage'] ]