bumping synth dataset (#4650)
bumping synth dataset (#4650)

[no ticket][risk=no] bumping synth dataset to SR2019q4r4 in test
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