Bump aho-corasick from 0.7.15 to 0.7.18 (#1024)
Bump aho-corasick from 0.7.15 to 0.7.18 (#1024)

Bumps [aho-corasick](https://github.com/BurntSushi/aho-corasick) from 0.7.15 to 0.7.18.
- [Release notes](https://github.com/BurntSushi/aho-corasick/releases)
- [Commits](https://github.com/BurntSushi/aho-corasick/compare/0.7.15...0.7.18)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
alex/ct-tools,alex/ct-tools