Put the subcmd name in the validate_output error message [#1539] #2595

Job	Run time
check-docs	34s
mypy	45s
pathogen-repo-ci (avian-flu)	50s
pyright	27s
pathogen-repo-ci (ebola)	56s
pathogen-repo-ci (lassa)	44s
test (python=3.8 biopython=1.80)	9m 54s
pathogen-repo-ci (mumps)	59s
test (python=3.8 biopython=latest)	10m 41s
pathogen-repo-ci (ncov)	1m 5s
test (python=3.9 biopython=1.80)	10m 28s
pathogen-repo-ci (rsv)	2m 28s
test (python=3.9 biopython=latest)	10m 35s
pathogen-repo-ci (seasonal-flu)	1m 8s
test (python=3.10 biopython=1.80)	10m 17s
pathogen-repo-ci (tb)	1m 29s
test (python=3.10 biopython=latest)	10m 13s
test (python=3.11 biopython=1.80)	10m 20s
test (python=3.11 biopython=latest)	11m 13s
build-docs / build-conda	0s
build-docs / build-pip	58s
codecov	17s
	1h 36m 21s

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