build(deps): bump maatwebsite/excel from 4.0.2 to 4.0.3

Bumps [maatwebsite/excel](https://github.com/SpartnerNL/Laravel-Excel) from 4.0.2 to 4.0.3.
- [Release notes](https://github.com/SpartnerNL/Laravel-Excel/releases)
- [Changelog](https://github.com/SpartnerNL/Laravel-Excel/blob/4.x/CHANGELOG.md)
- [Commits](SpartnerNL/Laravel-Excel@4.0.2...4.0.3)

---
updated-dependencies:
- dependency-name: maatwebsite/excel
  dependency-version: 4.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]