Bump conda-incubator/setup-miniconda from 3.0.3 to 3.0.4 #5449

Job	Run time
clang-format	19s
copyright_headers	17s
cppcheck	8m 19s
vale	33s
rstcheck	25s
forbidden_types	14s
lychee_IGNORED	22s
unused_names	16s
black	34s
flake8	25s
isort	12s
mypy	38s
pydocstyle	21s
pylint	35s
sphinx-rtd	3m 21s
sphinx-conda	0s
build_macos (macos-latest, clang, openmp, mpi, python, gsl, ltdl, boost, hdf5, optimize, warning)	10m 31s
build_linux (ubuntu-22.04, gcc, boost, optimize, warning)	12m 56s
build_linux (ubuntu-22.04, gcc, openmp, python, gsl, ltdl, boost, optimize, warning)	17m 50s
build_linux (ubuntu-22.04, gcc, mpi, python, gsl, ltdl, boost, optimize, warning)	18m 35s
build_linux (ubuntu-22.04, gcc, openmp, mpi, python, gsl, ltdl, boost, hdf5, sionlib, libneurosim...	31m 13s
	1h 47m 56s

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