[GH Actions] Add gradle.jvmargs args to ./gradlew bundleRelease

Summary:
This is kind of a longshot, but noticed that the disk usage issue was accompanied by a stackoverflow issue during some sort of final signing step. This issue doesn't replicate on my fork because I didn't include the keys necessary for signing.

I also noticed that the disk usage issue specified that the error occured when trying to write to some sort of build log file.

Maybe there's a stack overflow issue that's causing a lot of logging that's eating up disk space? It's a stretch, but figure it doesn't hurt to bump gradle.jvmargs to possibly reduce chance of stack overflow?

Test Plan: Land and see what happens.

Reviewers: ashoat, ginsu, marcin, tomek, jon

Reviewed By: ashoat

Differential Revision: https://phab.comm.dev/D8718