[CI] Update Windows version; 2019 is going EOL

Use 'latest' label where we don't care about a specific Win version.
Update clang-cl Windows build to use Ninja - VS and (default) NMake
were making problems.

Author: lukaszstolarczuk

.github/workflows/nightly.yml

@@ -207,7 +207,7 @@ jobs:
      VCPKG_PATH: "${{github.workspace}}/build/vcpkg/packages/hwloc_x64-windows;${{github.workspace}}/build/vcpkg/packages/tbb_x64-windows;${{github.workspace}}/build/vcpkg/packages/jemalloc_x64-windows"
    strategy:
      matrix:
-       os: ['windows-2019', 'windows-2022']
+       os: ['windows-2022', 'windows-2025']
        build_type: [Debug]
        compiler: [{c: icx, cxx: icx}]
        shared_library: ['ON', 'OFF']

.github/workflows/reusable_basic.yml

@@ -236,32 +236,43 @@ jobs:
       VCPKG_PATH_BIN: "${{github.workspace}}/build/vcpkg/packages/hwloc_x64-windows/bin;${{github.workspace}}/build/vcpkg/packages/tbb_x64-windows/bin;${{github.workspace}}/build/vcpkg/packages/jemalloc_x64-windows/bin"
     strategy:
       matrix:
-        os: ['windows-2019', 'windows-2022']
+        os: ['windows-2022', 'windows-2025']
         build_type: [Debug, Release]
         compiler: [{c: cl, cxx: cl}]
         shared_library: ['ON', 'OFF']
         level_zero_provider: ['ON']
         cuda_provider: ['ON']
         cmake_ver: ['default']
         include:
-          - os: 'windows-2019'
-            # clang build fails on Windows 2022
-            build_type: Release
+          # clang-cl works well with Ninja, Debug build
+          # For VS generator it produces build errors not related to UMF
+          - os: 'windows-2025'
+            build_type: Debug
             compiler: {c: clang-cl, cxx: clang-cl}
+            extra_build_options: '-G Ninja'
             shared_library: 'ON'
             level_zero_provider: 'ON'
             cuda_provider: 'ON'
-            toolset: "-T ClangCL"
-            cmake_ver: '3.14.0-win64-x64'
-          - os: 'windows-2022'
+            cmake_ver: 'default'
+          # Custom CMake and umfd enabled
+          - os: 'windows-2025'
             build_type: Release
             compiler: {c: cl, cxx: cl}
             shared_library: 'ON'
             level_zero_provider: 'ON'
             cuda_provider: 'ON'
             umfd_lib: 'ON'
             cmake_ver: '3.28.0-windows-x86_64'
-          - os: 'windows-2022'
+          # Custom, old CMake in a selected build
+          - os: 'windows-2025'
+            build_type: Release
+            compiler: {c: cl, cxx: cl}
+            shared_library: 'ON'
+            level_zero_provider: 'ON'
+            cuda_provider: 'ON'
+            cmake_ver: '3.14.0-win64-x64'
+          # L0/CUDA providers disabled
+          - os: 'windows-2025'
             build_type: Release
             compiler: {c: cl, cxx: cl}
             shared_library: 'ON'
@@ -322,7 +333,7 @@ jobs:
       run: >
         cmake
         -B ${{env.BUILD_DIR}}
-        ${{matrix.toolset}}
+        ${{matrix.extra_build_options || ''}}
         -DCMAKE_INSTALL_PREFIX="${{env.INSTL_DIR}}"
         -DCMAKE_PREFIX_PATH="${{env.VCPKG_PATH}}"
         -DCMAKE_C_COMPILER=${{matrix.compiler.c}}
@@ -382,7 +393,7 @@ jobs:
       matrix:
         build_type: [Release]
 
-    runs-on: 'windows-2022'
+    runs-on: 'windows-latest'
 
     steps:
     - name: Checkout
@@ -424,7 +435,7 @@ jobs:
       matrix:
         build_type: [Release]
 
-    runs-on: 'windows-2022'
+    runs-on: 'windows-latest'
 
     steps:
     - name: Checkout
@@ -466,7 +477,7 @@ jobs:
       matrix:
         build_type: [Release]
 
-    runs-on: 'windows-2022'
+    runs-on: 'windows-latest'
 
     steps:
     - name: Checkout

.github/workflows/reusable_compatibility.yml

@@ -126,7 +126,7 @@ jobs:
     env:
       VCPKG_PATH: "${{github.workspace}}/vcpkg/packages/hwloc_x64-windows;${{github.workspace}}/vcpkg/packages/tbb_x64-windows;${{github.workspace}}/vcpkg/packages/jemalloc_x64-windows"
       VCPKG_BIN_PATH: "${{github.workspace}}/vcpkg/packages/hwloc_x64-windows/bin;${{github.workspace}}/vcpkg/packages/tbb_x64-windows/bin;${{github.workspace}}/vcpkg/packages/jemalloc_x64-windows/bin"
-    runs-on: "windows-2022"
+    runs-on: "windows-latest"
 
     steps:
     - name: Checkout "tag" UMF version

.github/workflows/reusable_sanitizers.yml

@@ -82,8 +82,8 @@ jobs:
         compiler: [{c: cl, cxx: cl}, {c: clang-cl, cxx: clang-cl}]
         # Only ASAN is supported
         sanitizers: [{asan: ON}]
-    name: Sanitizers (windows-2022, compilers=${{matrix.compiler.c}}/${{matrix.compiler.cxx}}, asan=${{matrix.sanitizers.asan}})
-    runs-on: windows-2022
+    name: Sanitizers (windows-latest, compilers=${{matrix.compiler.c}}/${{matrix.compiler.cxx}}, asan=${{matrix.sanitizers.asan}})
+    runs-on: windows-latest
 
     steps:
     - name: Checkout