Ensure CircleCI tests get run for PR's from forks

[Asartea]

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1. Description of the Feature Request:
Yesterday a broken change got into the bot's main branch (I had forgotten to push a snapshot update), which caused it to not update to new versions of commands. CircleCI caught this, but it only ran once the change landed on the main branch, at which point it was already in. It should have also run when I proposed the PR, so that it can be caught before it gets merged

2. Acceptance Criteria:

• CircleCi runs for every PR, not just PR's from branches on this repo

3. Additional Information:

[01zulfi]

@Asartea Thanks, shared with the team.