Fix publishing

[bjhardcastle]

A gold star for whoever can get this action passing again: https://github.com/AllenInstitute/npc_lims/actions/runs/7465479669/job/20314721132

[bjhardcastle]

summary

testing fails, apparently in mypy, but with no error message other than

Found 1 error in 1 file (checked 17 source files)
Error: Process completed with exit code 1.

things I've tried

• reverting all changes since it last published (except some changes to yaml files)
• older version of mypy
• running mypy alone - all pass

[bjhardcastle]

Adding types-pyyaml as an explicit dev dependency fixed this.

Which is odd because we're calling mypy --install-types