website: Add 20.1 release post

Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Change-Id: Ia57c1aef37065f173f9b64ddeb411ecba0aaf52e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/35376
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
1 file changed