doc/next: document the minimum Linux kernel version for 1.24
The minimum Linux kernel version for Go 1.24 is now set to 3.2.
Updates #67001
For #68545
Change-Id: I509f09c8ed7f3067af14066cf139008db0cb06ba
Reviewed-on: https://go-review.googlesource.com/c/go/+/622015
Auto-Submit: Carlos Amedee <carlos@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>