go/ssa: skip failing test

Updates golang/go#69287

Change-Id: I1312d3ceb40ce0f899008730cf4bbfde04c2b648
Reviewed-on: https://go-review.googlesource.com/c/tools/+/610938
Reviewed-by: Zvonimir Pavlinovic <zpavlinovic@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

go/ssa/stdlib_test.go

@@ -41,6 +41,7 @@ func bytesAllocated() uint64 {
 // returned by the 'std' query, the set is essentially transitively
 // closed, so marginal per-dependency costs are invisible.
 func TestStdlib(t *testing.T) {
+	t.Skip("broken; see https://go.dev/issues/69287")
 	testLoad(t, 500, "std", "cmd")
 }