Update-changelog: Execute prettier when available

[zerok]

If yarn is available in the target environment (i.e. the grafana/grafana GHA) then prettier will be executed.

Fixes #42

[dsotirakis]

Hmmm, not sure about this create-a-PR-from-a-gha-thing :/
What about adding a yarn prettier:write command in the GHA itself as a job and then git diff to check if there are differences and ask from the author to run it themselves and apply the changes?

[zerok]

Hmmm, not sure about this create-a-PR-from-a-gha-thing :/ What about adding a yarn prettier:write command in the GHA itself as a job and then git diff to check if there are differences and ask from the author to run it themselves and apply the changes?

That action always created a PR. I just changed the formatting a bit since some of the conditonals didn't make any sense anymore 🙂

You mean adding prettier to the workflow? That's, sadly, not possible since the PR is created inside this action to limit complexity for the workflow itself. That was also the case with the previous implementation but I had hoped to somehow avoid having to call out to prettier 🙁

At this point I'm mostly out of ideas 🙁