Use Swift 6.1-dev for Windows

Author: tomasf

.github/workflows/swift.yml

@@ -1,6 +1,3 @@
-# This workflow will build a Swift project
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-swift
-
 name: Swift
 
 on:
@@ -20,6 +17,7 @@ jobs:
     steps:
     - uses: SwiftyLab/setup-swift@latest
       with:
+        swift-version: ${{ matrix.os == 'windows-latest' && '6.1-dev' || 'latest' }}
         development: ${{ matrix.os == 'windows-latest' }}
     - uses: actions/checkout@v4
       with:
@@ -28,4 +26,3 @@ jobs:
       run: swift build -v
     - name: Run tests
       run: swift test -v
-