cmd/cgo/internal/testsanitizers: bump GCC version for asan location checking
Require GCC 11 or greater to turn on the location checking portion of
the asan tests in this directory; the copy of libasan.so.6 shipped
with GCC 10 doesn't seem to properly digest the new DWARF 5 being
generated by the Go compiler+linker.
Updates #72752.
Change-Id: I92718c112df844d9333c4c798cddaae95665feb2
Reviewed-on: https://go-review.googlesource.com/c/go/+/656175 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>