feat: use new macos-14 runner

.github/workflows/insider-macos.yml

@@ -39,7 +39,7 @@ jobs:
         include:
           - runner: macos-12
             vscode_arch: x64
-          - runner: [self-hosted, macOS, ARM64]
+          - runner: macos-14
             vscode_arch: arm64
 
     steps:

.github/workflows/stable-macos.yml

@@ -38,7 +38,7 @@ jobs:
         include:
           - runner: macos-12
             vscode_arch: x64
-          - runner: [self-hosted, macOS, ARM64]
+          - runner: macos-14
             vscode_arch: arm64
 
     steps: