Mark a test as needing asserts enabled.

The problem is that this pass is setup such that when asserts are enabled we are
able to turn off/on internal parts of the transformation. When asserts are
disabled, we don’t support this and just run with everything. This causes the
output to differ.

rdar://72627921

Author: gottesmm

test/SILOptimizer/semantic-arc-opt-unchecked-ownership-conversion.sil

@@ -1,6 +1,7 @@
-// REQUIRES: rdar72627921
 // RUN: %target-sil-opt -module-name Swift -enable-sil-verify-all -semantic-arc-opts -sil-semantic-arc-peepholes-ownership-conversion-elim -sil-semantic-arc-peepholes-lifetime-joining %s | %FileCheck %s
 
+// REQUIRES: asserts
+
 sil_stage canonical
 
 import Builtin