Bump bstr from 0.2.14 to 0.2.15
Bump bstr from 0.2.14 to 0.2.15

Bumps [bstr](https://github.com/BurntSushi/bstr) from 0.2.14 to 0.2.15.
- [Release notes](https://github.com/BurntSushi/bstr/releases)
- [Commits](https://github.com/BurntSushi/bstr/compare/0.2.14...0.2.15)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
ryanfowler/lines