Update 0419-backtrace-api.md (#2345)

Author: stephentyrone

proposals/0419-backtrace-api.md

@@ -3,7 +3,7 @@
 * Proposal: [SE-0419](0419-backtrace-api.md)
 * Authors: [Alastair Houghton](https://github.com/al45tair)
 * Review Manager: [Steve Canon](https://github.com/stephentyrone)
-* Status: **Active Review (January 23 - February 6, 2024)**
+* Status: **Accepted**
 * Implementation: Implemented on main, requires explicit `_Backtracing` import.
 * Review: ([pitch](https://forums.swift.org/t/pitch-swift-backtracing-api/62741)) ([review](https://forums.swift.org/t/se-0419-swift-backtracing-api/69595))