[BEAM-2522] upgrading jackson to 2.8.9 (mitigating #1599)

[antonymayi]

Be sure to do all of the following to help us incorporate your contribution
quickly and easily:

• Make sure the PR title is formatted like:
  [BEAM-<Jira issue #>] Description of pull request
• Make sure tests pass via mvn clean verify.
• Replace <Jira issue #> in the title with the actual Jira issue
  number, if there is one.
• If this contribution is large, please file an Apache
  Individual Contributor License Agreement.

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[lukecwik]

R: @lukecwik

[coveralls]

Coverage increased (+0.02%) to 70.879% when pulling ca4f279 on antonymayi:master into 9df865a on apache:master.

[lukecwik]

LGTM
Merging