GHA: Use mingw & d3d12 for Windows builds

.github/workflows/windows.yml

@@ -34,13 +34,13 @@ on:
 env:
   SCONS_CACHE_MSVC_CONFIG: true
   SCONS_CACHE_LIMIT: 4096
-  SCONSFLAGS: production=yes tests=no verbose=yes warnings=extra werror=yes
+  SCONSFLAGS: production=yes use_mingw=yes d3d12=yes tests=no verbose=yes warnings=extra werror=yes
   DOTNET_NOLOGO: true
   DOTNET_CLI_TELEMETRY_OPTOUT: true
 
 jobs:
   windows-builds:
-    runs-on: "windows-latest"
+    runs-on: "ubuntu-latest"
     name: ${{ matrix.opts.name }}
     strategy:
       fail-fast: false
@@ -194,15 +194,10 @@ jobs:
           python-version: "3.x"
           architecture: "x64"
 
-      - name: Set up scons
-        run: |
-          python -c "import sys; print(sys.version)"
-          python -m pip install scons==4.4.0
-          python --version
-          scons --version
-
-      - name: Set up MSVC problem matcher
-        uses: ammaraskar/msvc-problem-matcher@master
+      - name: Set up Linux toolchain
+        uses: ./modules/limboai/.github/actions/setup-linux-toolchain
+        with:
+          arch: ${{matrix.opts.arch}}
 
       - name: Set up scons cache
         uses: actions/cache@v4