Update dependency com_googlesource_code_re2
Update dependency com_googlesource_code_re2

To version 2021-04-01.

PiperOrigin-RevId: 372954501
Change-Id: Ifd0a38c0a62a2670de6b962f09d50d26ce6546b6

google/asylo,google/asylo,google/asylo,google/asylo,google/asylo,google/asylo