Update celery to 5.6.2

[henrikek]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.36%. Comparing base (0e50d81) to head (1c40f0a).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2449   +/-   ##
=======================================
  Coverage   62.36%   62.36%           
=======================================
  Files         227      227           
  Lines       24684    24684           
  Branches     3076     3076           
=======================================
+ Hits        15393    15394    +1     
+ Misses       8617     8610    -7     
- Partials      674      680    +6     

Flag	Coverage Δ
backend	62.29% <ø> (+<0.01%)	⬆️

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