There is a new pull request by CameronNemo against master on the void-packages repository

https://github.com/CameronNemo/void-packages io.elementary.calendar-5.0.3
https://github.com/void-linux/void-packages/pull/17950

io.elementary.calendar: update to 5.0.3.
None

A patch file from https://github.com/void-linux/void-packages/pull/17950.patch is attached