Bump criterion from 0.3.3 to 0.3.4

Bumps [criterion](https://github.com/bheisler/criterion.rs) from 0.3.3 to 0.3.4.
- [Release notes](https://github.com/bheisler/criterion.rs/releases)
- [Changelog](https://github.com/bheisler/criterion.rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bheisler/criterion.rs/commits)

Signed-off-by: dependabot[bot] <support@github.com>
4 jobs for dependabot/cargo/criterion-0.3.4 in 12 minutes and 8 seconds (queued for 13 seconds)
latest
Status Name Job ID Coverage
  Prepare
passed prepare:docker #1387590
builder

00:01:10

 
  Build
passed build:uhyve #1387591

00:02:16

 
  Test
passed test:demo #1389420
privileged

00:08:41

failed test:demo #1387592
privileged

01:00:00