microdroid: Increase arm64 test memory

The current limit (145MB) causes flakiness. Increase to 150MB.

Bug: 231365444
Test: atest MicrodroidHostTestCases
Change-Id: I4f7ea3cac12669ff0c30600e3f6ae6910168a8fb
diff --git a/tests/testapk/src/java/com/android/microdroid/test/MicrodroidTests.java b/tests/testapk/src/java/com/android/microdroid/test/MicrodroidTests.java
index f7261d3..b3b8816 100644
--- a/tests/testapk/src/java/com/android/microdroid/test/MicrodroidTests.java
+++ b/tests/testapk/src/java/com/android/microdroid/test/MicrodroidTests.java
@@ -181,7 +181,7 @@
         }
     }
 
-    private static final int MIN_MEM_ARM64 = 145;
+    private static final int MIN_MEM_ARM64 = 150;
     private static final int MIN_MEM_X86_64 = 196;
 
     @Test