Bump test/bats from 12c23ed to a751f3d (#673)

Bumps [test/bats](https://github.com/bats-core/bats-core) from `12c23ed` to `a751f3d`.
- [Release notes](https://github.com/bats-core/bats-core/releases)
- [Commits](bats-core/bats-core@12c23ed...a751f3d)

---
updated-dependencies:
- dependency-name: test/bats
  dependency-type: direct:production
...

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