Move "session" support out of experimental for API 1.39 and up

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: a500c394df
Component: cli

components/cli/cli/command/image/build_session.go

@@ -28,6 +28,9 @@ import (
 const clientSessionRemote = "client-session"
 
 func isSessionSupported(dockerCli command.Cli) bool {
+	if versions.GreaterThanOrEqualTo(dockerCli.Client().ClientVersion(), "1.39") {
+		return true
+	}
 	return dockerCli.ServerInfo().HasExperimental && versions.GreaterThanOrEqualTo(dockerCli.Client().ClientVersion(), "1.31")
 }