Bump GET version to 2.6.1
GET 2.6.1 pins GCP plugin version, see gitlab-org/gitlab-environment-toolkit#599 (closed)
Follow up on !59 (comment 1214923555)
GET 2.6.1 pins GCP plugin version, see gitlab-org/gitlab-environment-toolkit#599 (closed)
Follow up on !59 (comment 1214923555)