Bump backtrace from 0.3.42 to 0.3.44 (#420)
Bump backtrace from 0.3.42 to 0.3.44 (#420)

Bumps [backtrace](https://github.com/rust-lang/backtrace-rs) from 0.3.42 to 0.3.44.
- [Release notes](https://github.com/rust-lang/backtrace-rs/releases)
- [Commits](https://github.com/rust-lang/backtrace-rs/compare/0.3.42...0.3.44)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
alex/ct-tools,alex/ct-tools