Replace Jackson with lightweight JSON library

[ascopes]

Remove Jackson and use a lightweight JSON library instead.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.72%. Comparing base (77d6077) to head (d1e6995).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #556      +/-   ##
==========================================
+ Coverage   90.63%   90.72%   +0.09%     
==========================================
  Files          42       42              
  Lines        1334     1346      +12     
  Branches       92       92              
==========================================
+ Hits         1209     1221      +12     
  Misses         93       93              
  Partials       32       32              

Files with missing lines	Coverage Δ
...n/sources/incremental/IncrementalCacheManager.java	89.40% <100.00%> (-0.60%)	⬇️
...ources/incremental/IncrementalCacheSerializer.java	100.00% <100.00%> (ø)