[release-21.0] Use proper groupId for mysql connector in java (#17540)

[vitess-bot]

Description

This is a backport of #17540

[vitess-bot]

Hello @frouioui, there are conflicts in this backport.

Please address them in order to merge this Pull Request. You can execute the snippet below to reset your branch and resolve the conflict manually.

Make sure you replace origin by the name of the vitessio/vitess remote

git fetch --all
gh pr checkout 17541 -R vitessio/vitess
git reset --hard origin/release-21.0
git cherry-pick -m 1 8e905aaf740ba7037e0dacbc3d4b1c09a23353d1

[vitess-bot]

Review Checklist

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• Ensure that the Pull Request has a descriptive title.
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.52%. Comparing base (f039622) to head (4e340af).
Report is 1 commits behind head on release-21.0.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-21.0   #17541      +/-   ##
================================================
- Coverage         67.53%   67.52%   -0.01%     
================================================
  Files              1570     1570              
  Lines            251468   251468              
================================================
- Hits             169818   169808      -10     
- Misses            81650    81660      +10     

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[mattlord]

To unblock once the fix is pushed.

[frouioui]

I ended up backporting #17542 in this Pull Request too. The work done in #17542 complements the original code that this PR backports.