Bump generator_test from 0.2.0 to 0.3.1 in /packages/auto_mappr

Bumps [generator_test](https://github.com/mrgnhnt96/generator_test) from 0.2.0 to 0.3.1.
- [Release notes](https://github.com/mrgnhnt96/generator_test/releases)
- [Changelog](https://github.com/mrgnhnt96/generator_test/blob/main/CHANGELOG.md)
- [Commits](https://github.com/mrgnhnt96/generator_test/commits)

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

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

packages/auto_mappr/pubspec.yaml

@@ -26,7 +26,7 @@ dependencies:
 
 dev_dependencies:
   build_runner: ^2.0.0
-  generator_test: ^0.2.0
+  generator_test: ">=0.2.0 <0.4.0"
   mocktail: ^1.0.0
   netglade_analysis: ^6.0.0
   source_gen_test: ^1.0.4