build(deps): bump github.com/fsouza/go-dockerclient from 1.2.2 to 1.6.3

Bumps [github.com/fsouza/go-dockerclient](https://github.com/fsouza/go-dockerclient) from 1.2.2 to 1.6.3.
- [Release notes](https://github.com/fsouza/go-dockerclient/releases)
- [Commits](fsouza/go-dockerclient@v1.2.2...v1.6.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

@@ -19,7 +19,7 @@ require (
 	github.com/docker/go-connections v0.3.0 // indirect
 	github.com/docker/go-units v0.3.2 // indirect
 	github.com/docker/libnetwork v0.0.0-20180726175142-9ffeaf7d8b64 // indirect
-	github.com/fsouza/go-dockerclient v1.2.2
+	github.com/fsouza/go-dockerclient v1.6.3
 	github.com/ghodss/yaml v1.0.0
 	github.com/go-errors/errors v1.0.1
 	github.com/golang/protobuf v1.3.3