fix(ci): correct event type 'pull_request'

[wkyoshida]

Contributor checklist

• This pull request is on a separate branch and not the main branch

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Description

Took a quick glance out of curiosity, and thought it odd that no SwiftLint errors were showing up for the following PRs:

• Fabuloui os fix swift lint warning closure parameter position 434 new #437
• Swift lint fix empty enum arguments throughout codebase 432 #439

Peeked at what the workflow configuration looked like and noticed the event type. We've run into this before actually in some other small project 😏 (activist-org/activist#490)

Related issue

• ✊

[github-actions]

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Maintainer checklist

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[andrewtavis]

Thanks @wkyoshida! Looking forward to the PR where you cite the activist one and this one 😅 But at this point I'll definitely have my eye out for this :) :)