[RW-6460][risk=no] Bump heap size for API unit tests (#4709)
[RW-6460][risk=no] Bump heap size for API unit tests (#4709)


all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench