quilt3: set max_pool_connections to QUILT_TRANSFER_MAX_CONCURRENCY

[sir-sigurd]

TODO

• Changelog entry (skip if change is not significant to end users, e.g. docs only)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a878b24) 35.40% compared to head (ec2857d) 35.65%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3867      +/-   ##
==========================================
+ Coverage   35.40%   35.65%   +0.24%     
==========================================
  Files         709      712       +3     
  Lines       31254    31361     +107     
  Branches     4681     4681              
==========================================
+ Hits        11066    11182     +116     
+ Misses      19032    19023       -9     
  Partials     1156     1156              

Flag	Coverage Δ
api-python	91.42% <100.00%> (+0.18%)	⬆️
catalog	10.44% <ø> (ø)
lambda	86.74% <ø> (+0.28%)	⬆️

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