Update ci for windows and linux for deprecated and new OS (#148)

Author: jhmgoossens

.github/workflows/linux-ci.yml

@@ -18,10 +18,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, ubuntu-22.04]
+        os: [ubuntu-22.04, ubuntu-24.04]
         build_static: [true, false]
         flags: [ADD_CXXFLAGS=-fvisibility=hidden]
-        download_requirements: [sudo apt install -y -qq gfortran liblapack-dev libmetis-dev libnauty2-dev]
+        download_requirements: [sudo apt install -y -qq gfortran liblapack-dev libmetis-dev libnauty-dev]
         include:
           - os: macos-13
             build_static: false

.github/workflows/windows-ci.yml

@@ -20,10 +20,10 @@ jobs:
       fail-fast: false
       matrix:
         include: [
-          { os: windows-2019, arch: x86_64, msystem: mingw64, debug: true, suffix: "-dbg" },
-          { os: windows-2019, arch: x86_64, msystem: mingw64, debug: false, suffix: "" },
-          { os: windows-2019, arch: msvc, msystem: mingw64, debug: false, suffix: "-md" },
-          { os: windows-2022, arch: msvc, msystem: mingw64, debug: false, suffix: "-md" },
+          { os: windows-2022, arch: x86_64, msystem: mingw64, debug: true, suffix: "-dbg" },
+          { os: windows-2025, arch: x86_64, msystem: mingw64, debug: false, suffix: "" },
+          { os: windows-2022, arch: msvc, msystem: mingw64, debug: true, suffix: "-dbg" },
+          { os: windows-2025, arch: msvc, msystem: mingw64, debug: false, suffix: "-md" },
         ]
     steps:
       - name: Checkout source