fix: resolve config path to align with the actual repository root

[tuomastik]

Fixes #253

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.01%. Comparing base (183a6f2) to head (c872315).
Report is 9 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #268   +/-   ##
=======================================
  Coverage   94.01%   94.01%           
=======================================
  Files          26       26           
  Lines        1722     1722           
  Branches      294      294           
=======================================
  Hits         1619     1619           
  Misses         75       75           
  Partials       28       28           

Flag	Coverage Δ
python-3.10	94.01% <100.00%> (ø)
python-3.11	94.01% <100.00%> (ø)
python-3.12	94.01% <100.00%> (ø)
python-3.13	94.01% <100.00%> (ø)
python-3.9	94.01% <100.00%> (ø)

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