www/websh: Update MASTER_SITES, deprecate and set expiration date to 2022-03-31

Use a direct URL to Apache's release archive site as it's not mirrored
by upstream mirror sites
Abandoned by upstream in 2012

Reference:
https://tcl.apache.org/websh/

Approved by:	rene (portmgr blanket), arrowd (mentor)
Differential Revision:	https://reviews.freebsd.org/D32420