Ensure all tests using the Runtime or RuntimeClient are serialized

Author: sebsto

Tests/AWSLambdaRuntimeTests/LambdaLocalServerTests.swift

@@ -19,7 +19,7 @@ import Testing
 
 @testable import AWSLambdaRuntime
 
-@Suite("Lambda Local Server Tests")
+@Suite("Lambda Local Server Tests", .serialized)
 struct LambdaLocalServerTests {
 
     @Test("Local server respects LOCAL_LAMBDA_PORT environment variable")

Tests/AWSLambdaRuntimeTests/LambdaRunLoopTests.swift

@@ -24,7 +24,7 @@ import FoundationEssentials
 import Foundation
 #endif
 
-@Suite
+@Suite(.serialized)
 struct LambdaRunLoopTests {
     struct MockEchoHandler: StreamingLambdaHandler {
         func handle(

Tests/AWSLambdaRuntimeTests/LambdaRuntime+ServiceLifeCycle.swift

@@ -18,7 +18,7 @@ import ServiceLifecycle
 import Testing
 import Logging
 
-@Suite
+@Suite(.serialized)
 struct LambdaRuntimeServiceLifecycleTests {
     @Test
     func testLambdaRuntimeGracefulShutdown() async throws {

Tests/AWSLambdaRuntimeTests/LambdaRuntimeClientTests.swift

@@ -22,7 +22,7 @@ import struct Foundation.UUID
 
 @testable import AWSLambdaRuntime
 
-@Suite
+@Suite(.serialized)
 struct LambdaRuntimeClientTests {
 
     let logger = {

Tests/AWSLambdaRuntimeTests/LambdaRuntimeTests.swift

@@ -20,7 +20,7 @@ import Testing
 
 @testable import AWSLambdaRuntime
 
-@Suite("LambdaRuntimeTests")
+@Suite("LambdaRuntimeTests", .serialized)
 struct LambdaRuntimeTests {
 
     @Test("LambdaRuntime can only be run once")