There is an updated pull request by zen0bit against master on the void-packages repository

https://github.com/oSoWoSo/VUR tcl
https://github.com/void-linux/void-packages/pull/41478

tcl: update to 8.6.13
#### Testing the changes
- I tested the changes in this PR: **briefly**

#### Local build testing
- I built this PR locally for my native architecture, (x64 glibc)

A patch file from https://github.com/void-linux/void-packages/pull/41478.patch is attached