Pin nightly builds to macOS-12 (#1452)

Author: WardenGnaw

.github/workflows/Build-And-Test.yml

@@ -150,7 +150,7 @@ jobs:
         path: ${{ github.workspace }}/bin/DebugAdapterProtocolTests/Debug/CppTests/results.trx
 
   osx_build:
-    runs-on: macos-latest
+    runs-on: macos-12
     steps:
     - name: Checkout
       uses: actions/checkout@v3
@@ -176,4 +176,4 @@ jobs:
       if: ${{ always() }}
       with:
         name: osx_x64_results
-        path: ${{ github.workspace }}/bin/DebugAdapterProtocolTests/Debug/CppTests/results.trx
+        path: ${{ github.workspace }}/bin/DebugAdapterProtocolTests/Debug/CppTests/results.trx