chore(release): publish [skip ci]

- @ohif/extension-cornerstone@2.12.15
 - @ohif/extension-vtk@1.12.34
 - @ohif/core@2.16.29
 - @ohif/viewer@4.12.40

platform/viewer/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ohif/viewer",
-  "version": "4.12.39",
+  "version": "4.12.40",
   "description": "OHIF Viewer",
   "author": "OHIF Contributors",
   "license": "MIT",
@@ -47,8 +47,8 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@ohif/core": "^2.16.28",
-    "@ohif/extension-cornerstone": "^2.12.14",
+    "@ohif/core": "^2.16.29",
+    "@ohif/extension-cornerstone": "^2.12.15",
     "@ohif/extension-debugging": "^0.3.3",
     "@ohif/extension-dicom-html": "^1.3.23",
     "@ohif/extension-dicom-microscopy": "^0.52.0",
@@ -56,7 +56,7 @@
     "@ohif/extension-dicom-rt": "^0.7.13",
     "@ohif/extension-dicom-segmentation": "^0.7.15",
     "@ohif/extension-lesion-tracker": "^0.2.2",
-    "@ohif/extension-vtk": "^1.12.33",
+    "@ohif/extension-vtk": "^1.12.34",
     "@ohif/i18n": "^0.53.0",
     "@ohif/ui": "^1.10.10",
     "@tanem/react-nprogress": "^1.1.25",