Support comment editing/deleting for Github Actions

[jmenestr]

This PR removes the hardcoded userid for Github Actions workflows.

This hard coded value was causing the function

 getDangerCommentIDs = async (dangerID: string): Promise<string[]> => {
    const userID = await this.getUserID()
...
    return allComments
...
      .filter(comment => comment.user.id === userID) // Does it have the right user ID?
...
  }

to always fail because the hard coded userid would NEVER match a comment user id because it was not grabbing the correct userid associated with the given api key.

[orta]

Ah, I bet during the alpha there was a consistent user id for all actions and then that changed.

[peril-staging]

Thanks for the PR @jmenestr.

This PR has been shipped in v9.2.3 - CHANGELOG.