Select Xcode 14.3.1 on CI (#51)

This is required for matching the DemangleNodes.def file

Author: keith

.github/workflows/ci.yml

@@ -10,11 +10,13 @@ jobs:
     runs-on: macos-13
     steps:
       - uses: actions/checkout@v3
+      - run: sudo xcode-select -s '/Applications/Xcode_14.3.1.app/Contents/Developer'
       - run: bazelisk build //...
       - run: bazelisk test //...
   test-swiftpm:
     runs-on: macos-13
     steps:
       - uses: actions/checkout@v3
+      - run: sudo xcode-select -s '/Applications/Xcode_14.3.1.app/Contents/Developer'
       - run: swift build
       - run: swift test