Bump jetty-server in /thoth-modules/thoth-standalone
Bump jetty-server in /thoth-modules/thoth-standalone

Bumps [jetty-server](https://github.com/eclipse/jetty.project) from 9.3.7.v20160115 to 9.4.17.v20190418.
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.3.7.v20160115...jetty-9.4.17.v20190418)

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