SE-0407 was implemented in Swift 5.9.2 (#2236)

Author: DougGregor

proposals/0407-member-macro-conformances.md

@@ -3,7 +3,7 @@
 * Proposal: [SE-0407](0407-member-macro-conformances.md)
 * Authors: [Doug Gregor](https://github.com/DougGregor)
 * Review Manager: [John McCall](https://github.com/rjmccall)
-* Status: **Accepted**
+* Status: **Implemented (Swift 5.9.2)**
 * Vision: [Macros](https://github.com/apple/swift-evolution/blob/main/visions/macros.md)
 * Implementation: [apple/swift#67758](https://github.com/apple/swift/pull/67758)
 * Review: ([pitch](https://forums.swift.org/t/pitch-member-macros-that-know-what-conformances-are-missing/66590)) ([review](https://forums.swift.org/t/se-0407-member-macro-conformances/66951)) ([acceptance](https://forums.swift.org/t/accepted-se-0407-member-macro-conformances/67345))