fix(taps): Support non-nullable but not required SQL columns

[edgarrmondragon]

Closes #2224

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📚 Documentation preview 📚: https://meltano-sdk--2225.org.readthedocs.build/en/2225/

[codspeed-hq]

CodSpeed Performance Report

Merging #2225 will not alter performance

_{Comparing edgarrmondragon/fix/support-nullable-not-required-sql-fields (1599f28) with main (b7b8d15)}

Summary

✅ 6 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b7b8d15) 88.47% compared to head (1599f28) 88.47%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2225   +/-   ##
=======================================
  Coverage   88.47%   88.47%           
=======================================
  Files          54       54           
  Lines        4720     4721    +1     
  Branches      919      919           
=======================================
+ Hits         4176     4177    +1     
  Misses        383      383           
  Partials      161      161           

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