Enable Prettier for changelog validation

[Mrtenz]

This enables Prettier for changelog validation.

[mcmire]

This should be unblocked now.

[mcmire]

Hmm. It doesn't look like the CHANGELOG needs that extra line for some reason.

[Inikowu]

Inikowu-Isaac.zip package.json

[mcmire]

It looks like when we validate the changelogs in CI, we manually run yarn auto-changelog. Perhaps we should not do this anymore? I see that we are doing this because we may need to pass --rc depending on whether the current branch is a release branch or not, but we could extract the existing lint:changelog package script to a shell script and then add the same if statement that exists in the CI config. That way it gets run consistently locally and in CI.

[Mrtenz]

It looks like when we validate the changelogs in CI, we manually run yarn auto-changelog. Perhaps we should not do this anymore? I see that we are doing this because we may need to pass --rc depending on whether the current branch is a release branch or not, but we could extract the existing lint:changelog package script to a shell script and then add the same if statement that exists in the CI config. That way it gets run consistently locally and in CI.

I just swapped it out for yarn lint:changelog, which seems to work fine, and seems easier than adding a script.

[mcmire]

Ah I think the PR I merged might have created merge conflicts, sorry.