build & test on windows

Author: swhitty

.github/workflows/build.yml

@@ -125,3 +125,20 @@ jobs:
         run: swift build --build-tests
       - name: Test
         run: swift test --skip-build
+
+  windows_swift_6_1:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Swift
+        uses: SwiftyLab/setup-swift@latest
+        with:
+          swift-version: "6.1.2"
+          visual-studio-components: Microsoft.VisualStudio.Component.Windows11SDK.22621
+      - name: Version
+        run: swift --version
+      - name: Build
+        run: swift build --build-tests
+      - name: Test
+        run: swift test --skip-build