chore: enable incremental builds

[dyladan]

Which problem is this PR solving?

• Enable incremental builds #632

Short description of the changes

• Enable the incremental: true flag

[codecov-io]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.49%. Comparing base (af5a364) to head (b81502e).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #633      +/-   ##
==========================================
- Coverage   90.68%   90.49%   -0.19%     
==========================================
  Files         181      181              
  Lines        9371     9249     -122     
  Branches      817      812       -5     
==========================================
- Hits         8498     8370     -128     
- Misses        873      879       +6     

see 19 files with indirect coverage changes

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[OlivierAlbertini]

Nice!