fix tests

src/main/python/ddadevops/c4k_mixin.py

@@ -1,3 +1,4 @@
+import deprecation
 from .domain import C4kBuild, DnsRecord
 from .devops_build import DevopsBuild
 from .credential import gopass_field_from_path, gopass_password_from_path

src/main/python/ddadevops/devops_docker_build.py

@@ -1,3 +1,4 @@
+import deprecation
 from .domain import DockerBuild
 from .application import DockerBuildService
 from .devops_build import DevopsBuild, create_devops_build_config