build(deps): bump tower-test from a1c277b to 1992ebd

Bumps [tower-test](https://github.com/tower-rs/tower) from `a1c277b` to `1992ebd`.
- [Release notes](https://github.com/tower-rs/tower/releases)
- [Commits](tower-rs/tower@a1c277b...1992ebd)

---
updated-dependencies:
- dependency-name: tower-test
  dependency-version: 1992ebd196467deffe193d5a073db655492ce168
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]