Enable gcf/go116 tests for continuous builds
Enable gcf/go116 tests for continuous builds

PiperOrigin-RevId: 388710328
Change-Id: Ifd83be549e753bd5d85a1d21dd20c1038e6e065c

GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks