Fix location of guest libraries on translated archs

Arm64 native bridge guest libraries are located in lib64/arm64

Test: make
Change-Id: I59b5888835a6e3124833bf4510c9ef8aa3cb249b
diff --git a/build/apex/art_apex_test.py b/build/apex/art_apex_test.py
index d3ba1c1..db161ed 100755
--- a/build/apex/art_apex_test.py
+++ b/build/apex/art_apex_test.py
@@ -501,7 +501,7 @@
     # TODO(b/131155689): These are unused - fix the build rules to avoid
     # creating them.
     self._checker.ignore_path('lib/arm')
-    self._checker.ignore_path('lib/arm64')
+    self._checker.ignore_path('lib64/arm64')
 
 
 class ReleaseHostChecker: