style: enable OverrideBothEqualsAndHashcode like checks

[vil02]

Thanks to #5157 we can enable these checks in SpotBugs and PMD.

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 38.56%. Comparing base (8466219) to head (ec1c627).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5159      +/-   ##
============================================
- Coverage     38.57%   38.56%   -0.02%     
+ Complexity     2379     2378       -1     
============================================
  Files           516      516              
  Lines         15313    15313              
  Branches       2957     2957              
============================================
- Hits           5907     5905       -2     
- Misses         9121     9122       +1     
- Partials        285      286       +1     

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