Remove Swift 5 support from QueuedRemoteXPCService, update CI

Author: mattmassicotte

.github/workflows/ci.yml

@@ -13,18 +13,18 @@ on:
     branches:
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: Test
-    runs-on: macOS-14
-    strategy:
-      matrix:
-        developer_dir:
-          - "/Applications/Xcode_15.4.app/Contents/Developer"
-          - "/Applications/Xcode_16.1.app/Contents/Developer"
+    runs-on: macOS-15
+    timeout-minutes: 30
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_16.2.app
     steps:
       - uses: actions/checkout@v4
       - name: Test
-        env:
-          DEVELOPER_DIR: ${{ matrix.developer_dir }}
         run: set -o pipefail && xcodebuild -scheme AsyncXPCConnection -destination "platform=macOS" test | xcbeautify

Sources/AsyncXPCConnection/QueuedRemoteXPCService.swift

@@ -42,15 +42,9 @@ extension QueuedRemoteXPCService {
 }
 
 extension QueuedRemoteXPCService {
-#if compiler(<6.0)
-	public typealias ResultOperationHandler<Value> = @Sendable (Result<Value, Error>) -> Void
-	public typealias ErrorOperationHandler = @Sendable (Error?) -> Void
-	public typealias ValueErrorOperationHandler<Value> = @Sendable (Value?, Error?) -> Void
-#else
 	public typealias ResultOperationHandler<Value> = (Result<Value, Error>) -> Void
 	public typealias ErrorOperationHandler = (Error?) -> Void
 	public typealias ValueErrorOperationHandler<Value> = (Value?, Error?) -> Void
-#endif
 
 	public func addResultOperation<Value: Sendable>(
 		barrier: Bool = false,