Bump tokio-util from 0.6.1 to 0.6.2 (#865)
Bump tokio-util from 0.6.1 to 0.6.2 (#865)

Bumps [tokio-util](https://github.com/tokio-rs/tokio) from 0.6.1 to 0.6.2.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-util-0.6.1...tokio-util-0.6.2)

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

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