increase the margin of error (this test needs to ensure 2GB is not be…

…ing allocated so we don't need to be very precise)

src/libraries/System.Formats.Nrbf/tests/AttackTests.cs

@@ -136,7 +136,7 @@ public void ArraysOfStringsAreNotBeingPreAllocated()
 
         long after = GetAllocatedByteCount();
 
-        Assert.InRange(after, before, before + 1024);
+        Assert.InRange(after, before, before + 5000);
         Assert.Equal(SerializationRecordType.ArraySingleString, serializationRecord.RecordType);
     }