Swift: use macos-12-xl runners

Author: redsun82

.github/workflows/swift.yml

@@ -49,7 +49,7 @@ jobs:
   # not using a matrix as you cannot depend on a specific job in a matrix, and we want to start linux checks
   # without waiting for the macOS build
   build-macos:
-    runs-on: macos-latest
+    runs-on: macos-12-xl
     steps:
       - uses: actions/checkout@v3
       - uses: ./swift/actions/create-extractor-pack
@@ -96,7 +96,7 @@ jobs:
       - uses: ./swift/actions/run-integration-tests
   integration-tests-macos:
     needs: build-macos
-    runs-on: macos-latest
+    runs-on: macos-12-xl
     steps:
       - uses: actions/checkout@v3
       - uses: ./swift/actions/run-integration-tests