Add Go 1.19 to Go acceptance tests.
Add Go 1.19 to Go acceptance tests.

PiperOrigin-RevId: 481940905
Change-Id: Iae764d634367bee0d9d6d275a07db3834efe6beb

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