HeidiSQL is now available in Microsoft's App Store: https://www.microsoft.com/store/apps/9NXPRT2T0ZJF
This is basically the current v9.5 release, with some functionality enhancements for running on the Universal Windows Platform (UWP).
This is for all Windows 10 users, and probably a good replacement for the outdated package on Chocolatey: https://chocolatey.org/packages/HeidiSQL
Thanks a lot to Marc from Microsoft for helping me get through the process, and for his patience!