Ensure jackson, jetty, and jersey components use the same versions as each other

[mfoo]

This MR introduces new configuration settings for the pom versions for jetty, jackson, and jersey.

There's new versions available of all of these now, an using a common version will mean Dependabot raises a single change request bumping multiple packages at the same time.

Note: I've also included the following changes which I haven't yet been able to test beyond "does it compile?":

• Jackson bump from 2.13.1 to 2.13.4
• Jersey bump from 3.0.4 to 3.0.8
• Jetty bump from to 11.0.9 (and 11.0.10 for jetty-server) to 11.0.12

[abstractfoundry]

Looks great, thank you @mfoo. :grin: