Use newer reqwest middleware, bump to 0.3.26

[adamchalmers]

Fixes this problem in some of our crates:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.06%. Comparing base (436d33b) to head (b8cd372).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #616   +/-   ##
=======================================
  Coverage   48.06%   48.06%           
=======================================
  Files          34       34           
  Lines       10701    10701           
=======================================
  Hits         5143     5143           
  Misses       5558     5558           

Flag	Coverage Δ
unittests	48.06% <100.00%> (ø)

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