Ignore readme files during CI

[milesfrain]

Reminder to configure actions to ignore readme files (main docs) so updating the changlog doesn't unnecessarily re-trigger CI.

Endorsed in purescript-contrib/purescript-string-parsers#72 (comment)

[thomashoneyman]

I think this is a good idea -- we could do something like this?

paths-ignore:
  - 'README.md'

We could update this in the template here in governance, and then also run the updater script to apply this change across the organization.

[garyb]

Same goes for the changelog? Or can we do **/*.md or something like that even?

[thomashoneyman]

Whoops, yes, we could probably ignore all .md files (or at least those in the root and docs/ directories)