Bump pub_updater from 0.3.1 to 0.4.0

Bumps [pub_updater](https://github.com/VeryGoodOpenSource/pub_updater) from 0.3.1 to 0.4.0.
- [Release notes](https://github.com/VeryGoodOpenSource/pub_updater/releases)
- [Changelog](https://github.com/VeryGoodOpenSource/pub_updater/blob/main/CHANGELOG.md)
- [Commits](VeryGoodOpenSource/pub_updater@v0.3.1...v0.4.0)

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

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

pubspec.yaml

@@ -10,7 +10,7 @@ dependencies:
   args: ^2.4.1
   cli_completion: ^0.3.0
   mason_logger: ^0.2.5
-  pub_updater: ^0.3.1
+  pub_updater: ^0.4.0
 
 dev_dependencies:
   build_runner: ^2.4.4