add Windows action runner to tests

Author: gregcotten

.github/workflows/build.yml

@@ -135,3 +135,19 @@ jobs:
         run: swift sdk install https://github.com/finagolfin/swift-android-sdk/releases/download/6.0.3/swift-6.0.3-RELEASE-android-24-0.1.artifactbundle.tar.gz --checksum 4566f23ae2d36dc5c02e915cd67d83b2af971faca4b2595fdd75cf0286acfac1
       - name: Build
         run: swift build --swift-sdk aarch64-unknown-linux-android24
+
+  windows_swift_6_0:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Swift
+        uses: SwiftyLab/setup-swift@latest
+        with:
+          swift-version: "6.0.3"
+      - name: Version
+        run: swift --version
+      - name: Build
+        run: swift build --build-tests
+      - name: Test
+        run: swift test --skip-build