TST: groupby with daily frequency fails with NonExistentTimeError on clock change day in Brazil

[simonjayhawkins]

• closes groupby with daily frequency fails with NonExistentTimeError on clock change day in Brazil #23742
• tests added / passed
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• [n/a ] whatsnew entry

[pep8speaks]

Hello @simonjayhawkins! Thanks for submitting the PR.

• There are no PEP8 issues in the file pandas/tests/test_resample.py !

[codecov]

Codecov Report

Merging #23756 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #23756   +/-   ##
=======================================
  Coverage   92.25%   92.25%           
=======================================
  Files         161      161           
  Lines       51390    51390           
=======================================
  Hits        47411    47411           
  Misses       3979     3979

Flag	Coverage Δ
#multiple	90.64% <ø> (ø)	⬆️
#single	42.31% <ø> (ø)	⬆️

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[jreback]

thanks @simonjayhawkins