std: Update the backtrace crate submodule

This commit updates the `library/backtrace` submodule which primarily
pulls in support for split-debuginfo on macOS, avoiding the need for
`dsymutil` to get run to get line numbers and filenames in backtraces.

Author: alexcrichton

backtrace

@@ -1 +1 @@
-Subproject commit 8b8ea53b56f519dd7780defdd4254daaec892584
+Subproject commit af078ecc0b069ec594982f92d4c6c58af99efbb5

std/Cargo.toml

@@ -23,14 +23,14 @@ unwind = { path = "../unwind" }
 hashbrown = { version = "0.9.0", default-features = false, features = ['rustc-dep-of-std'] }
 
 # Dependencies of the `backtrace` crate
-addr2line = { version = "0.13.0", optional = true, default-features = false }
+addr2line = { version = "0.14.0", optional = true, default-features = false }
 rustc-demangle = { version = "0.1.18", features = ['rustc-dep-of-std'] }
 miniz_oxide = { version = "0.4.0", optional = true, default-features = false }
 [dependencies.object]
-version = "0.20"
+version = "0.22"
 optional = true
 default-features = false
-features = ['read_core', 'elf', 'macho', 'pe']
+features = ['read_core', 'elf', 'macho', 'pe', 'unaligned', 'archive']
 
 [dev-dependencies]
 rand = "0.7"