@jaril informed me that Replay.io is missing metadata
from Metabase E2E tests. Apparently trying to access
system environment variable from Cypress support file
didn't work.

The solution for this is to prefix the environment variable
with `CYPRESS_` and then to read it using `Cypress.env()`

This is what Cypress documentation suggests:
https://docs.cypress.io/guides/guides/environment-variables#Option-3-CYPRESS_

[ci skip]