build(deps): bump backtrace from 0.3.50 to 0.3.51
Bumps [backtrace](https://github.com/rust-lang/backtrace-rs) from 0.3.50 to 0.3.51.
- [Release notes](https://github.com/rust-lang/backtrace-rs/releases)
- [Commits](https://github.com/rust-lang/backtrace-rs/compare/0.3.50...0.3.51)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>