chore(version): Update package versions to 3.13.0-beta.21 [skip ci]

addOns/externals/dicom-microscopy-viewer/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@externals/dicom-microscopy-viewer",
   "description": "External reference to dicom-microscopy-viewer",
-  "version": "3.13.0-beta.20",
+  "version": "3.13.0-beta.21",
   "license": "MIT",
   "dependencies": {
     "dicom-microscopy-viewer": "0.48.17"