Push the "latest" tag as well when deploying images.

Dependencies

• [2] AWWC6P5Z Add migration to include payment network with addresses.
• [*] LEINLS3X Update deployment documentation.

Change contents

• edit in Makefile at line 12
  [2.151]

  [2.151]
  + docker push docker.io/aftok/aftok-server:latest