[github-ci] add/rename url json files
Summary: I renamed app_url.json to squadcal_url.json and added a new file called commapp_url.json in a recent diff. This diff makes the corresponding changes to our github actions
Test Plan: we'll see if this works on github
Reviewers: atul
Reviewed By: atul
Subscribers: ashoat, palys-swm, Adrian, karol-bisztyga, benschac
Differential Revision: https://phabricator.ashoat.com/D3453