chore(version): Update package versions to 3.13.0-beta.20 [skip ci]

platform/i18n/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ohif/i18n",
-  "version": "3.13.0-beta.19",
+  "version": "3.13.0-beta.20",
   "description": "Internationalization library for The OHIF Viewer",
   "author": "OHIF",
   "license": "MIT",