Bump actions/upload-artifact from v1 to v2.1.4
Bump actions/upload-artifact from v1 to v2.1.4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from v1 to v2.1.4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v1...58740802ef971a2d71eff71e63d48ab68d1f5507)

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