Add micromamba to PATH #506

Job	Run time
no-environment-file	23s
bash (ubuntu-latest)	31s
micromamba-old-version-1	36s
bash (macos-latest)	1s
micromamba-old-version-2	33s
bash (windows-latest)	28s
micromamba-shell (ubuntu-latest)	26s
no-environment	6s
micromamba-shell (macos-latest)	1s
cmd	2m 9s
comment-in-environment-file	34s
conda-lock	13s
create-args-multiple-spaces-1	29s
create-args-multiple-spaces-2	34s
custom-condarc	35s
env-variable	30s
multiple-shell-init	26s
powershell (ubuntu-latest)	29s
powershell (macos-latest)	1s
powershell (windows-latest)	19s
check-micromamba-on-path	7s
environment-file	33s
output-environment-path-custom-root-prefix	6s
output-environment-path-env-file	27s
output-environment-path-env-name-overwrite	29s
output-no-environment-path	4s
	11m 10s

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