Bump build_runner from 2.12.2 to 2.14.0 in /packages/convenient_test_dev

Bumps [build_runner](https://github.com/dart-lang/build) from 2.12.2 to 2.14.0.
- [Release notes](https://github.com/dart-lang/build/releases)
- [Commits](dart-lang/build@build_runner-v2.12.2...build_runner-v2.14.0)

---
updated-dependencies:
- dependency-name: build_runner
  dependency-version: 2.14.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

packages/convenient_test_dev/pubspec.yaml

@@ -36,7 +36,7 @@ dependencies:
   web_socket_channel: ^3.0.3
 
 dev_dependencies:
-  build_runner: '>=2.10.0 <2.13.0'
+  build_runner: ^2.10.0
   freezed: ^3.2.5
   json_serializable: '>=6.11.0 <7.0.0'