verify DataSchema equals

[sullis]

use EqualsVerifier library to verify equals method

https://jqno.nl/equalsverifier/

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 61.48%. Comparing base (59551e4) to head (41ebcdb). Report is 133 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #12662      +/-   ##
============================================
- Coverage     61.75%   61.48%   -0.27%     
+ Complexity      207      198       -9     
============================================
  Files          2436     2452      +16     
  Lines        133233   133848     +615     
  Branches      20636    20766     +130     
============================================
+ Hits          82274    82294      +20     
- Misses        44911    45397     +486     
- Partials       6048     6157     +109     

Flag	Coverage Δ
custom-integration1	<0.01% <ø> (-0.01%)	:arrow_down:
integration	<0.01% <ø> (-0.01%)	:arrow_down:
integration1	<0.01% <ø> (-0.01%)	:arrow_down:
integration2	0.00% <ø> (ø)
java-11	61.42% <ø> (-0.29%)	:arrow_down:
java-21	61.34% <ø> (-0.28%)	:arrow_down:
skip-bytebuffers-false	61.45% <ø> (-0.30%)	:arrow_down:
skip-bytebuffers-true	61.32% <ø> (+33.59%)	:arrow_up:
temurin	61.48% <ø> (-0.27%)	:arrow_down:
unittests	61.47% <ø> (-0.27%)	:arrow_down:
unittests1	46.37% <ø> (-0.52%)	:arrow_down:
unittests2	27.76% <ø> (+0.03%)	:arrow_up:

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