Bump actions/download-artifact from v1 to v2.0.4
Bump actions/download-artifact from v1 to v2.0.4

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from v1 to v2.0.4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v1...b3cedea9bed36890c824f4065163b667eeca272b)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
phpDocumentor/phpDocumentor2,phpDocumentor/phpDocumentor2,phpDocumentor/phpDocumentor2,phpDocumentor/phpDocumentor2