increased timeout value for connection to browser in CI

1 job for develop in 4 minutes and 29 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #20749
node npm angular
coverage

00:04:29

 
Name Stage Failure
failed
coverage Test
npm ERR! mc_frontend@1.6.1 test: `ng test --code-coverage --watch=false --browsers=ChromeHeadless`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the mc_frontend@1.6.1 test script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2020-03-03T14_01_50_023Z-debug.log
ERROR: Job failed: exit code 1