New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/issues/35715#issuecomment-1170205783

Comment:
This is not a bug of `tzutils` or `tzdata`.
It's different in implementation of libc.
On a glibc system:
```sh
$ TZ=right/UTC date -d 'Dec 31 2008 23:59:60'
Wed Dec 31 11:59:60 PM UTC 2008
```

IOW, this is the musl specific behavior.