Revert to macos-12

Author: minhqdao

.github/workflows/CI.yml

@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-13]
+        os: [ubuntu-latest, macos-12]
         toolchain:
           - { compiler: gcc, version: 10 }
           - { compiler: gcc, version: 11 }
@@ -34,9 +34,9 @@ jobs:
             toolchain:
               - { compiler: gcc, version: 10 }
         exclude:
-          - os: macos-13
+          - os: macos-12
             toolchain: { compiler: intel, version: "2024.1" }
-          - os: macos-13
+          - os: macos-12
             toolchain: { compiler: gcc, version: 13 }
     env:
       BUILD_DIR: ${{ matrix.build == 'cmake' && 'build' || '.' }}