Bump vergen from 8.1.1 to 8.1.2

Bumps [vergen](https://github.com/rustyhorde/vergen) from 8.1.1 to 8.1.2.
- [Release notes](https://github.com/rustyhorde/vergen/releases)
- [Commits](rustyhorde/vergen@8.1.1...8.1.2)

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

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