upgrade jackson and jetty-server to deal with CVEs (#267)
upgrade jackson and jetty-server to deal with CVEs (#267)

Found these via the Github vulnerability feature.

For org.eclipse.jetty:jetty-server:
- https://nvd.nist.gov/vuln/detail/CVE-2017-7656 (moderate)
- https://nvd.nist.gov/vuln/detail/CVE-2017-9735 (moderate)
- https://nvd.nist.gov/vuln/detail/CVE-2018-12536 (moderate)
- https://nvd.nist.gov/vuln/detail/CVE-2017-7657 (critical)
- https://nvd.nist.gov/vuln/detail/CVE-2016-4800 (high)

For com.fasterxml.jackson.core:jackson-databind:

- https://nvd.nist.gov/vuln/detail/CVE-2017-17485 (high)
- https://nvd.nist.gov/vuln/detail/CVE-2018-7489 (high)
- https://nvd.nist.gov/vuln/detail/CVE-2017-7525 (high)
spotify/apollo,spotify/apollo,spotify/apollo,spotify/apollo