Bump signal-hook-registry from 1.1.1 to 1.2.0 (#256)
Bump signal-hook-registry from 1.1.1 to 1.2.0 (#256)

Bumps [signal-hook-registry](https://github.com/vorner/signal-hook) from 1.1.1 to 1.2.0.
- [Release notes](https://github.com/vorner/signal-hook/releases)
- [Changelog](https://github.com/vorner/signal-hook/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vorner/signal-hook/compare/registry-v1.1.1...registry-v1.2.0)

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