Updated mediawiki/extensions
Project: mediawiki/extensions/VisualEditor  f83c8d7519a3611ab7f52272bf2ac6999f56994c

[Browser test] Additional waits for SauceLabs timeouts

Applying same fix that was applied earlier to "bullets_steps.rb"
since that relieved frequent timeout behavior seen with tests
run via SauceLabs.

Change-Id: I0c924a315cd2bf4821a9155a1d1dcd052910e50e