deps: bump mockall from 0.12.0 to 0.12.1 (#150)

Bumps [mockall](https://github.com/asomers/mockall) from 0.12.0 to 0.12.1.
- [Changelog](https://github.com/asomers/mockall/blob/master/CHANGELOG.md)
- [Commits](asomers/mockall@v0.12.0...v0.12.1)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -35,5 +35,5 @@ lto = true
 strip = true
 
 [dev-dependencies]
-mockall = "0.12.0"
+mockall = "0.12.1"
 mockito = "1.2.0"