chore(deps): bump league/event from 3.0.2 to 3.0.3

Bumps [league/event](https://github.com/thephpleague/event) from 3.0.2 to 3.0.3.
- [Changelog](https://github.com/thephpleague/event/blob/master/changelog.md)
- [Commits](thephpleague/event@3.0.2...3.0.3)

---
updated-dependencies:
- dependency-name: league/event
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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