test: fix remaining windows path issues #63

Job	Run time
linting-linux	8s
mypy check on linux (3.8)	1m 4s
mypy check on linux (3.9)	1m 4s
mypy check on linux (3.10)	1m 0s
pytest on linux (3.8)	1m 0s
mypy check on linux (3.11)	1m 2s
pytest on linux (3.9)	52s
mypy check on linux (3.12)	1m 21s
pytest on linux (3.10)	57s
pytest on linux (3.11)	53s
pytest on linux (3.12)	1m 9s
build python package	16s
conda package build (and upload if release)	4m 39s
publish python package to pypi	0s
merge current tag to main branch	0s
	15m 25s

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