dependencies updated (except firebase - the latest is broken), version bumped

package.json

@@ -1,7 +1,7 @@
 {
   "name": "tinode-webapp",
   "description": "Tinode messenger for the web",
-  "version": "0.21.0-rc2",
+  "version": "0.21.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/tinode/example-react-js.git"
@@ -65,11 +65,11 @@
   "author": "Tinode Authors <info@tinode.co>",
   "license": "Apache-2.0",
   "dependencies": {
-    "firebase": "^9.14.0",
+    "firebase": "9.14.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-intl": "^6.2.1",
-    "tinode-sdk": "^0.21.0-rc2",
+    "tinode-sdk": "^0.21.0",
     "webm-duration-fix": "^1.0.4"
   },
   "devDependencies": {