Merge pull request #49 from zrax/ci_img_update

Remove unsupported CI runner images

Author: zrax

.github/workflows/ci-build.yml

@@ -10,10 +10,9 @@ jobs:
     strategy:
       matrix:
         cfg:
-          - { os: ubuntu-20.04, compiler: gcc-7    }
-          - { os: ubuntu-20.04, compiler: gcc      } # GCC 9
-          - { os: ubuntu-20.04, compiler: clang    } # Clang 10
+          - { os: ubuntu-22.04, compiler: gcc-9    }
           - { os: ubuntu-22.04, compiler: gcc      } # GCC 11
+          - { os: ubuntu-22.04, compiler: clang-11 }
           - { os: ubuntu-22.04, compiler: clang-15 }
           - { os: ubuntu-24.04, compiler: gcc-14   }
           - { os: ubuntu-24.04, compiler: clang    } # Clang 18
@@ -64,8 +63,6 @@ jobs:
     strategy:
       matrix:
         cfg:
-          - { os: windows-2019, msvc: Visual Studio 16 2019, arch: Win32 }
-          - { os: windows-2019, msvc: Visual Studio 16 2019, arch: x64 }
           - { os: windows-2022, msvc: Visual Studio 17 2022, arch: Win32 }
           - { os: windows-2022, msvc: Visual Studio 17 2022, arch: x64 }
     steps: