bumping preprod cdr (#6680)
bumping preprod cdr (#6680)

[no ticket][risk=no] promoting RT/CT preprod cdr
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