Update Gozer to use Junit5

[CodeSmell]

This PR includes the refresh to JDK 21 and update of dependencies
Related to issue #158

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.30%. Comparing base (169bd88) to head (1feb9e6).
⚠️ Report is 5 commits behind head on master.
❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #160      +/-   ##
============================================
- Coverage     86.37%   86.30%   -0.07%     
- Complexity      954      957       +3     
============================================
  Files            84       84              
  Lines          2568     2578      +10     
  Branches        246      246              
============================================
+ Hits           2218     2225       +7     
- Misses          235      237       +2     
- Partials        115      116       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.