update dependencies, bump version to 0.20.0-rc2, rebuild

package.json

@@ -1,7 +1,7 @@
 {
   "name": "tinode-webapp",
   "description": "Tinode messenger for the web",
-  "version": "0.20.0-rc1",
+  "version": "0.20.0-rc2",
 
   "repository": {
     "type": "git",
@@ -72,7 +72,7 @@
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
     "react-intl": "^5.20.2",
-    "tinode-sdk": "^0.20.0-rc1",
+    "tinode-sdk": "^0.20.0-rc2",
     "webrtc-adapter": "^8.1.1"
   },
   "devDependencies": {