update tool-use-by-group query

[cat-bro]

This fails with a syntax error

cat@galaxy:~$ gxadmin query tool-use-by-group 2022-02-01 --group=QUT_users
ERROR:  invalid input syntax for type timestamp: "-01"
LINE 12: date_trunc('month', job.create_time) = '-01'

This looks like a typo with year_month vs years_month

[cat-bro]

making this a draft because I'm not sure if it uses the --group argument in the query

[hexylena]

yes you're correct arg_group is not present.

Based on the help text group looks like it should be mandatory as well, since it's not included in the output.

I can't make the suggestion but if you could add a

AND galaxy_group.name = '$arg_group'

that should help