Update GraphicsMagick to 1.3.34 and Docker to 19.03.1
- GraphicsMagick from 1.3.33 to 1.3.34 (gitlab-org&2533 (closed))
- Docker CE from 18.06.1 to 19.03.1 (gitlab-org/gitlab-build-images!215 (merged))
Part of gitlab-org&2533 (closed)
cf. Previous update of GraphicsMagick and Docker: !896 (merged)
Blocked by gitlab-org/gitlab-build-images!269 (merged)
Edited by Takuya Noguchi