Increase buffer size for Java Heap Prof CTS. am: e8990636e0 am: d17b6a1b16 am: a7be53d5a2

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/perfetto/+/12459203

Change-Id: Iaa70a5cadb731e354b695e6117f43442e7f7be08