Bump xstream from 1.4.13-java7 to 1.4.16
Bump xstream from 1.4.13-java7 to 1.4.16

Bumps [xstream](https://github.com/x-stream/xstream) from 1.4.13-java7 to 1.4.16.
- [Release notes](https://github.com/x-stream/xstream/releases)
- [Commits](https://github.com/x-stream/xstream/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
devacfr/capsicum