Fix after release of swift-log 1.8.0 (#619)

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Fix after release of swift-log 1.8.0
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## Description of changes
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Author: adam-fowler

Sources/AWSLambdaRuntime/LambdaRuntime.swift

@@ -47,7 +47,7 @@ public final class LambdaRuntime<Handler>: Sendable where Handler: StreamingLamb
 
         // use the LOG_LEVEL environment variable to set the log level.
         // if the environment variable is not set, use the default log level from the logger provided
-        log.logLevel = Lambda.env("LOG_LEVEL").flatMap(Logger.Level.init) ?? logger.logLevel
+        log.logLevel = Lambda.env("LOG_LEVEL").flatMap { .init(rawValue: $0) } ?? logger.logLevel
 
         self.logger = log
         self.logger.debug("LambdaRuntime initialized")

Sources/MockServer/MockHTTPServer.swift

@@ -44,7 +44,7 @@ struct HttpServer {
 
     static func main() async throws {
         var log = Logger(label: "MockServer")
-        log.logLevel = env("LOG_LEVEL").flatMap(Logger.Level.init) ?? .info
+        log.logLevel = env("LOG_LEVEL").flatMap { .init(rawValue: $0) } ?? .info
 
         let server = HttpServer(
             host: env("HOST") ?? "127.0.0.1",