[tz] vzic link in tz-link.html

[Allen Winter]

Hi,

I'm the current maintainer of vzic.
We moved the project from sourceforge to github many years ago
and I've been informed that your tz-link.html page still points
to the old sourceforge url.

Please update tz-link.html so that the vzic link points to https://github.com/libical/vzic
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: This is a digitally signed message part.
URL: <https://mm.icann.org/pipermail/tz/attachments/20240328/6115f805/signature.asc>