Pin down floaty lockfile. (#9713)
Pin down floaty lockfile. (#9713)

### Problem

Some recent merges independently bumped the version of tokio in the repo, and added a new dependency on tokio. The result is that our lockfile changes slightly on clean master.

### Solution

Commit the stable changes.

[ci skip-jvm-tests]
jsirois/pants,benjyw/pants,jsirois/pants,benjyw/pants,benjyw/pants,benjyw/pants,pantsbuild/pants,benjyw/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,pantsbuild/pants,benjyw/pants,pantsbuild/pants,jsirois/pants,pantsbuild/pants,benjyw/pants