fix: bump version of libbacktrace library

[knst]

Issue being fixed or feature implemented

Old version of libbacktrace library doesn't support debug information for ELF produced by modern compilers

It appears like an error:

unrecognized DWARF version in .debug_info at 6 no debug info in ELF executable

What was done?

Bump version of libbacktraces to the current master. It doesn't seems as it has any releases anymore, so, I chose the latest revision.

How Has This Been Tested?

With old version:

No debug information available for stacktrace. You should add debug information and then run
dashd -printcrashinfo=bvcgc43iinzgc43ijfxgm3ybaacwiyltnbsfw43umq5du5dfojwws3tborssqkjamnqwy3dfmqqgi5lfeb2g6idvnzugc3tenrswiidfpbrwk4dunfxw4csfpbrwk4dunfxw4oraor4xazj5mnugc4ramnxw443ufiwca53imf2d2isiiveekiqed56acaaaaaaaaucrlszzcfaaaaevexftsekaaafvmqbaaaaaaaaaa===

With this fixes output as expected:

std::terminate() called due to unhandled exception
Exception: type=char const*, what="HEHE"
   0#: (0x5D7C19364C3F) bitcoind.cpp:114          - AppInit
   1#: (0x5D7C19364C3F) bitcoind.cpp:273          - main
   2#: (0x7B0B19C28150) libc_start_call_main.h:74 - __libc_start_call_main
   3#: (0x7B0B19C28209) libc-start.c:128          - call_init
   4#: (0x7B0B19C28209) libc-start.c:347          - __libc_start_main_impl
   5#: (0x5D7C193734D5) <unknown-file>            - ???

Breaking Changes

n/a

Checklist:

• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have added or updated relevant unit/integration/functional/e2e tests
• [ ] I have made corresponding changes to the documentation
• [x] I have assigned this pull request to a milestone