Update default API version

Signed-off-by: Joffrey F <[email protected]>

Author: shin-

docker/constants.py

@@ -1,7 +1,7 @@
 import sys
 from .version import version
 
-DEFAULT_DOCKER_API_VERSION = '1.26'
+DEFAULT_DOCKER_API_VERSION = '1.30'
 MINIMUM_DOCKER_API_VERSION = '1.21'
 DEFAULT_TIMEOUT_SECONDS = 60
 STREAM_HEADER_SIZE_BYTES = 8