fix(custom-options): update offset option

[tnagorra]

Changes

• Update "offset" custom option
• Update connection timeout on validate project requests to 10s

This PR doesn't introduce any:

• temporary files, auto-generated files or secret keys
• n+1 queries
• flake8 issues
• print
• typos
• unwanted comments

This PR contains valid:

• tests
• permission checks
• translations

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.41%. Comparing base (7cd4f37) to head (b2f83d8).
⚠️ Report is 3 commits behind head on develop.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #224   +/-   ##
========================================
  Coverage    87.41%   87.41%           
========================================
  Files          205      205           
  Lines        12458    12458           
  Branches      1049     1049           
========================================
  Hits         10890    10890           
  Misses        1181     1181           
  Partials       387      387           

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