Fix work asking about the keep office for mac up to date everytime i open it

If you continue with an older version of macOS, your Office apps will still work, but you'll no longer receive any updates including security updates. As of the December 2020 (build 16.44) update for Microsoft 365 for Mac or Office 2019 for Mac, macOS 10.14 Mojave or later is required to receive updates to Word, Excel, PowerPoint, Outlook and OneNote.