bump backtrace

winterqt · winterqt · commit 3f87b7cc0bdd · 2021-10-17T21:20:18.000-04:00
rust-lang/backtrace-rs#446 allows binaries built with Nix on macOS to be symbolized.
diff --git a/library/backtrace b/library/backtrace
@@ -1 +1 @@
-Subproject commit cc89bb66f91b2b4a640b0b525ca5d753e3346d7e
+Subproject commit 7f14f76c8ba6945c052fab77022e6e768b58e0b4
