Update RingCentral.munki.recipe
Update RingCentral.munki.recipe

Despite what their site (https://support.ringcentral.com/article/Supported-Browsers-RingCentral-App-Web.html) says requiring 10.13, `LSMinimumSystemVersion` is 10.10.0, and I've confirmed it works on 10.12.6.

Also, I was able to uninstall the app while it was running. Although RingCentral.app was removed from /Applications, it was still running in memory.
autopkg/bradclare-recipes