Update Sources/RawStructuredFieldValues/Sendable.swift

Co-authored-by: Cory Benfield <lukasa@apple.com>

Author: Davidde94

Sources/RawStructuredFieldValues/Sendable.swift

@@ -2,7 +2,7 @@
 //
 // This source file is part of the SwiftNIO open source project
 //
-// Copyright (c) 2020 Apple Inc. and the SwiftNIO project authors
+// Copyright (c) 2022 Apple Inc. and the SwiftNIO project authors
 // Licensed under Apache License v2.0
 //
 // See LICENSE.txt for license information