build(deps): bump trait-variant from 0.1.1 to 0.1.2

Bumps [trait-variant](https://github.com/rust-lang/impl-trait-utils) from 0.1.1 to 0.1.2.
- [Release notes](https://github.com/rust-lang/impl-trait-utils/releases)
- [Commits](rust-lang/impl-trait-utils@v0.1.1...v0.1.2)

---
updated-dependencies:
- dependency-name: trait-variant
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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