Bump phpunit/phpunit from 5.4.4 to 5.6.3
Bump phpunit/phpunit from 5.4.4 to 5.6.3

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 5.4.4 to 5.6.3.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/main/ChangeLog-8.5.md)
- [Commits](https://github.com/sebastianbergmann/phpunit/compare/5.4.4...5.6.3)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Ascendens/themoviedb-api-test