Update toolchain

Author: langleyd

.github/workflows/swift.yml

@@ -18,14 +18,10 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: maxim-lobanov/setup-xcode@v1
-      with:
-        xcode-version: '15.0.1'
-
     - name: Install Swift
       uses: swift-actions/setup-swift@v2
       with:
-        swift-version: "5.7"
+        swift-version: "6.1"
 
     - name: Build for Swift
       run: swift build

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 5.6
+// swift-tools-version: 6.1
 
 import PackageDescription