[CI] [macOS] Fix CI with new GitHub runners

New `macos-latest` run on an arm64 image instead of x86_64 breaking the
editor workflow.

.github/workflows/macos_builds.yml

@@ -14,7 +14,7 @@ concurrency:
 
 jobs:
   build-macos:
-    runs-on: "macos-latest"
+    runs-on: "macos-12"
     name: ${{ matrix.name }}
     strategy:
       fail-fast: false