chore(deps): bump mocktail from 0.2.0 to 0.3.0 (#30)

Bumps [mocktail](https://github.com/felangel/mocktail) from 0.2.0 to 0.3.0.
- [Release notes](https://github.com/felangel/mocktail/releases)
- [Commits](felangel/mocktail@mocktail-v0.2.0...mocktail-v0.3.0)

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

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

pubspec.yaml

@@ -14,6 +14,6 @@ dependencies:
 dev_dependencies:
   build_runner: ^2.1.2
   json_serializable: ^5.0.0
-  mocktail: ^0.2.0
+  mocktail: ">=0.2.0 <0.4.0"
   test: ^1.17.0
   very_good_analysis: ^2.4.0