Update to Swift 6.1

Author: simolus3

.github/workflows/build_and_test.yaml

@@ -19,20 +19,3 @@ jobs:
           xcodebuild test -scheme PowerSync-Package -destination "platform=iOS Simulator,name=iPhone 16"
           xcodebuild test -scheme PowerSync-Package -destination "platform=macOS,arch=arm64,name=My Mac"
           xcodebuild test -scheme PowerSync-Package -destination "platform=watchOS Simulator,arch=arm64,name=Apple Watch Ultra 2 (49mm)"
-
-  buildSwift6:
-    name: Build and test with Swift 6
-    runs-on: macos-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up XCode
-        uses: maxim-lobanov/setup-xcode@v1
-        with:
-          xcode-version: latest-stable
-      - name: Use Swift 6
-        run: |
-          sed -i '' 's|^// swift-tools-version:.*$|// swift-tools-version:6.1|' Package.swift
-      - name: Build and Test
-        run: |
-          swift build -Xswiftc -strict-concurrency=complete
-          swift test -Xswiftc -strict-concurrency=complete

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 5.9
+// swift-tools-version: 6.1
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription