chore: bump paragon peer dep to ^23.20.0

23.20.0 added atlasTranslations to package.json, enabling transitive
translation resolution via openedx translations:pull.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: brian-smith-tcril

package-lock.json

@@ -163,7 +163,7 @@
     "nodemon": "^3.1.4"
   },
   "peerDependencies": {
-    "@openedx/paragon": "^23.4.5",
+    "@openedx/paragon": "^23.20.0",
     "@tanstack/react-query": "^5.81.2",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",