adjusted geopandas version

[mfranz13]

swap geopandas<1 with geopandas>=1 to catch and fix problems

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 76.40%. Comparing base (57c60a1) to head (bbc525b).
Report is 9 commits behind head on develop.

Files	Patch %	Lines
pandapower/io_utils.py	87.50%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2370   +/-   ##
========================================
  Coverage    76.40%   76.40%           
========================================
  Files          280      280           
  Lines        32427    32432    +5     
========================================
+ Hits         24776    24780    +4     
- Misses        7651     7652    +1     

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