use latest Windows and Swift 6.1

There are now fixes to compnerd/swift-build#909 and
swiftlang/swift#79751, swiftlang/swift#80144 is merged.

Author: DivineDominion

.github/workflows/swift-windows.yml

@@ -15,7 +15,7 @@ defaults:
 
 jobs:
   build-windows:
-    runs-on: windows-2019 # Windows SDK lower than 10.0.26100 is needed until https://github.com/swiftlang/swift/pull/79751 released!
+    runs-on: windows-latest
 
     steps:
     - name: Setup VS Dev Environment
@@ -24,8 +24,8 @@ jobs:
     - name: Setup
       uses: compnerd/[email protected]
       with:
-        branch: swift-5.10-release
-        tag: 5.10-RELEASE
+        branch: swift-6.1-release
+        tag: 6.1-RELEASE
 
     - name: Compute vcpkg Triplet
       id: triplet