Remove macos-12 and its variants, deprecated

.github/workflows/build-ripunzip.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macos-12, windows-2019]
+        os: [ubuntu-20.04, macos-14, windows-2019]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4

.github/workflows/swift.yml

@@ -44,7 +44,7 @@ jobs:
   # without waiting for the macOS build
   build-and-test-macos:
     if: github.repository_owner == 'github'
-    runs-on: macos-12-xl
+    runs-on: macos-14-xlarge
     steps:
       - uses: actions/checkout@v4
       - uses: ./swift/actions/build-and-test
@@ -64,7 +64,7 @@ jobs:
   qltests-macos:
     if: ${{ github.repository_owner == 'github' && github.event_name == 'pull_request' }}
     needs: build-and-test-macos
-    runs-on: macos-12-xl
+    runs-on: macos-14-xlarge
     steps:
       - uses: actions/checkout@v4
       - uses: ./swift/actions/run-ql-tests

docs/codeql/reusables/supported-platforms.rst

@@ -12,9 +12,7 @@
    Windows,"Windows 10 / Windows Server 2019
 
    Windows 11 / Windows Server 2022","x86-64"
-   macOS,"macOS 12 Monterey
-
-   macOS 13 Ventura
+   macOS,"macOS 13 Ventura
 
    macOS 14 Sonoma","x86-64, arm64 (Apple Silicon)