feat: no more zookeeper

[joshuarli]

Moving to this newer version of kafka where zookeeper is deprecated and can run in a zookeeper-less mode is good:

• less moving parts - one java container instead of two - presumably less resource intensive overall
• CI and local versions can match again as upstream publishes both amd64 and aarch64 docker images
• less complexity (no more waiting for zookeeper startup, networking is less complicated as we don't need to differentiate between sentry_zookeeper and localhost, etc.)

[github-actions]

🚨 Warning: This pull request contains Frontend and Backend changes!

It's discouraged to make changes to Sentry's Frontend and Backend in a single pull request. The Frontend and Backend are not atomically deployed. If the changes are interdependent of each other, they must be separated into two pull requests and be made forward or backwards compatible, such that the Backend or Frontend can be safely deployed independently.

Have questions? Please ask in the #discuss-dev-infra channel.

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Name	Status	Preview	Comments	Updated (UTC)
sentry	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 2, 2023 9:32pm

[codecov]

Codecov Report

Merging #55742 (b99dd2c) into master (dcac7bb) will increase coverage by 0.00%.
Report is 5 commits behind head on master.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #55742   +/-   ##
=======================================
  Coverage   78.92%   78.93%           
=======================================
  Files        5118     5118           
  Lines      220800   220802    +2     
  Branches    37388    37388           
=======================================
+ Hits       174272   174282   +10     
+ Misses      40895    40890    -5     
+ Partials     5633     5630    -3     

Files	Coverage Δ
src/sentry/conf/server.py	89.79% <ø> (ø)

... and 7 files with indirect coverage changes

[asottile-sentry]

@joshuarli we should keep zookeeper in this patch, then fix getsentry, then remove it in a followup patch -- that way we don't disrupt developers

[asottile-sentry]