Increase CI test timeout (#47973)
Seems builds in CI have been timing out with the 90s limit and with the
shared concurrency of the limited CPUs additional time may be needed to
avoid retrying un-necessarily.
x-ref:
https://github.com/vercel/next.js/actions/runs/4620023451/jobs/8170530943
x-ref:
https://github.com/vercel/next.js/actions/runs/4619675493/jobs/8168849370
