updated default sequence relaxation seconds

[fe51]

Since detection are now aggregated from identical bboxes from a pose, not only from a camera, should update relaxation time to avoid some situation where a the same event creates multiple alert

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.14%. Comparing base (2e33027) to head (46a02ed).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #549   +/-   ##
=======================================
  Coverage   88.14%   88.14%           
=======================================
  Files          50       50           
  Lines        1990     1990           
=======================================
  Hits         1754     1754           
  Misses        236      236           

Flag	Coverage Δ
backend	88.16% <100.00%> (ø)
client	87.80% <ø> (ø)

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[MateoLostanlen]

LGTM !