Bump Java heap size
Bump Java heap size

kluver/lenskit,vaibhav345/lenskit,kluver/lenskit,vaibhav345/lenskit,vaibhav345/lenskit,tajinder-txstate/lenskit,tajinder-txstate/lenskit,tajinder-txstate/lenskit,kluver/lenskit,tajinder-txstate/lenskit,kluver/lenskit,kluver/lenskit,vaibhav345/lenskit