CI: removed deprecated macos-12 runner from macOS workflow

Author: pinam45

.github/workflows/macos.yml

@@ -13,13 +13,6 @@ jobs:
       fail-fast: false
       matrix:
         config: [
-          # {os: macos-12, xcode: 13.1},
-          # {os: macos-12, xcode: 13.2.1},
-          # {os: macos-12, xcode: 13.3.1},
-          {os: macos-12, xcode: 13.4.1},
-          # {os: macos-12, xcode: 14.0.1},
-          # {os: macos-12, xcode: 14.1},
-          {os: macos-12, xcode: 14.2},
           # {os: macos-13, xcode: 14.1},
           # {os: macos-13, xcode: 14.2},
           {os: macos-13, xcode: 14.3.1},