TODO: Use upstream jq-action

[rosshamish]

jq-action was missing multiline support, so I added it downstream here to use. I then contributed it back upstream in sergeysova/jq-action#3.

This issue tracks removing the downstream use in .github\actions\jq-action-master in favor of upstream sergeysova/jq-action, which can only be done once that PR merges and a new version is released.