This test imports the "slices" package, which did not exist in Go 1.20.
The test passes on Go 1.21 and above, and the behavior of the function
under test is unlikely to vary by platform, so it doesn't seem worth
refactoring the test to work with older releases.
Updates golang/go#65055.
Fixesgolang/go#65223.
Change-Id: I5f32106d6057b779579a87750633bc57f97fe152
Cq-Include-Trybots: luci.golang.try:x_sys-go1.20-windows-386,x_sys-go1.20-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/sys/+/557975
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>