Update @wfa_measurement_proto git commit version
Update @wfa_measurement_proto git commit version

Change-Id: I8838f2b8a6499c014f96d3ed0c09484e309b61b8

world-federation-of-advertisers/cross-media-measurement,world-federation-of-advertisers/cross-media-measurement,world-federation-of-advertisers/cross-media-measurement