chore(deps): bump test_api from 0.6.1 to 0.7.0 in /packages/mocktail

Bumps [test_api](https://github.com/dart-lang/test/tree/master/pkgs) from 0.6.1 to 0.7.0.
- [Release notes](https://github.com/dart-lang/test/releases)
- [Commits](https://github.com/dart-lang/test/commits/test_api-v0.7.0/pkgs)

---
updated-dependencies:
- dependency-name: test_api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

packages/mocktail/pubspec.yaml

@@ -11,7 +11,7 @@ environment:
 dependencies:
   collection: ^1.15.0
   matcher: ^0.12.15
-  test_api: '>=0.2.1 <0.7.0'
+  test_api: ">=0.2.1 <0.8.0"
 
 dev_dependencies:
   meta: ^1.10.0