Update 0433-mutex.md (#2421)

Author: stephentyrone

proposals/0433-mutex.md

@@ -4,7 +4,7 @@
 * Author: [Alejandro Alonso](https://github.com/Azoy)
 * Review Manager: [Stephen Canon](https://github.com/stephentyrone)
 * Implementation: [apple/swift#71383](https://github.com/apple/swift/pull/71383)
-* Status: **Active Review (April 10-24, 2024)**
+* Status: **Accepted**
 * Review: ([pitch](https://forums.swift.org/t/pitch-synchronous-mutual-exclusion-lock/69889)), ([review](https://forums.swift.org/t/se-0433-synchronous-mutual-exclusion-lock/71174))
 
 ## Introduction