fix: PLT-959: Retries for async migrations

[triklozoid]

No description provided.

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[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 81.44%. Comparing base (358fc9f) to head (e8af927).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
label_studio/core/redis.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #8986       +/-   ##
============================================
+ Coverage    66.70%   81.44%   +14.73%     
============================================
  Files          828      267      -561     
  Lines        64762    24214    -40548     
  Branches     10986        0    -10986     
============================================
- Hits         43199    19720    -23479     
+ Misses       21559     4494    -17065     
+ Partials         4        0        -4     

Flag	Coverage Δ
lsf-e2e	?
lsf-integration	?
lsf-unit	?
pytests	81.44% <87.50%> (-0.01%)	⬇️

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