Update pr-worthy.yml

[Spongman]

use tj-actions/changed-files to calculate which languages require build/test

[novusnota]

@Spongman great addition!

But you probably have to add:

uses: actions/checkout@v3
with:
  fetch-depth: 0  # to retrieve all commits

uses: tj-actions/changed-files@v36
with:
  since-last-remote-commit: true  # to make it work against the most recent additions to master

And I'd also suggest adding the branches: to the pull_request: section on top to make checks run when merging into the master branch and not for everything:

pull_request:
  branches: [master]  # only run the workflow on merging into the master branch

[Spongman]

are you sure since_last_remote_commit: true is necessary?

Defaults to the last non merge commit on the target branch for pull request events

[novusnota]

@Spongman I'm thinking yes, as otherwise it compares the latest state of your PR with the previous commit on your PR, not with the latest remote as a whole. See: issue and the answer

[Spongman]

ok, sounds good. committed.

[novusnota]

@vhladko hey, could you please review and/or merge this? :)

[vhladko]

Lgtm, merged :)