Update to 5.4.3 from 5.4.2 doesn't work for some

[jim-docker]

A few people reported that the update to 5.4.3 from 5.4.2 did not work:

From 5.4.2 Started Lens. Automated update check failed to find the update. Then I clicked the "Check for updates" in the menu to have it check again. Found the update, said it was 5.4.3-something. Clicked yes to download and install and restart. Then nothing happened. I restarted Lens manually just to see. Still 5.4.2

3 incidences, 2 on mac, 1 on windows