chore(release): publish [skip ci]

- @ohif/extension-dicom-rt@0.1.4
 - @ohif/extension-vtk@1.5.6
 - @ohif/core@2.9.6
 - @ohif/viewer@3.11.11

extensions/vtk/CHANGELOG.md

@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [1.5.6](https://github.com/OHIF/Viewers/compare/@ohif/extension-vtk@1.5.5...@ohif/extension-vtk@1.5.6) (2020-05-14)
+
+**Note:** Version bump only for package @ohif/extension-vtk
+
+
+
+
+
 ## [1.5.5](https://github.com/OHIF/Viewers/compare/@ohif/extension-vtk@1.5.4...@ohif/extension-vtk@1.5.5) (2020-05-12)