fix return type hints, these changed in 0.14.0

[brondsem]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.60%. Comparing base (637a033) to head (a318be8).
⚠️ Report is 38 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #77      +/-   ##
==========================================
+ Coverage   90.19%   91.60%   +1.40%     
==========================================
  Files          43       47       +4     
  Lines        6724     7185     +461     
==========================================
+ Hits         6065     6582     +517     
+ Misses        659      603      -56     

Flag	Coverage Δ
tests-3.10	91.77% <ø> (+1.38%)	⬆️
tests-3.11	91.77% <ø> (+1.38%)	⬆️
tests-3.12	91.77% <ø> (?)
tests-3.13	91.78% <ø> (?)
tests-3.14	91.78% <ø> (?)
tests-3.7	?
tests-3.8	?
tests-3.9	91.59% <ø> (+1.39%)	⬆️
tests-pypy3.9	91.71% <ø> (+1.38%)	⬆️

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