CI: Update github actions case.

Author: snowberryfield

.github/workflows/main.yml

@@ -25,19 +25,19 @@ jobs:
       - { os: ubuntu-24.04, cc: clang-18, cxx: clang++-18 } # 18.1.3
       # For macOS 12, the available compilers are specified according to
       # https://github.com/actions/runner-images/blob/main/images/macos/macos-12-Readme.md
-      - { os: macos-12, cc: gcc-11, cxx: g++-11 } # 11.4.0 
+      #- { os: macos-12, cc: gcc-11, cxx: g++-11 } # 11.4.0 
       - { os: macos-12, cc: gcc-12, cxx: g++-12 } # 12.4.0 
       #- { os: macos-12, cc: gcc-13, cxx: g++-13 } # 13.3.0 
       - { os: macos-12, cc: gcc-14, cxx: g++-14 } # 14.1.0_2 
       # For macOS 13, the available compilers are specified according to
       # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md
-      - { os: macos-13, cc: gcc-11, cxx: g++-11 } # 11.4.0 
+      #- { os: macos-13, cc: gcc-11, cxx: g++-11 } # 11.4.0 
       - { os: macos-13, cc: gcc-12, cxx: g++-12 } # 12.4.0 
       #- { os: macos-13, cc: gcc-13, cxx: g++-13 } # 13.3.0 
       - { os: macos-13, cc: gcc-14, cxx: g++-14 } # 14.1.0_2 
       # For macOS 13, the available compilers are specified according to
       # https://github.com/actions/runner-images/blob/main/images/macos/macos-14-Readme.md
-      - { os: macos-14, cc: gcc-11, cxx: g++-11 } # 11.4.0 
+      #- { os: macos-14, cc: gcc-11, cxx: g++-11 } # 11.4.0 
       - { os: macos-14, cc: gcc-12, cxx: g++-12 } # 12.4.0 
       - { os: macos-14, cc: gcc-13, cxx: g++-13 } # 13.3.0 
       - { os: macos-14, cc: gcc-14, cxx: g++-14 } # 14.1.0_2