fix: example/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-IP-6240864
- https://snyk.io/vuln/SNYK-JS-BRACES-6838727
- https://snyk.io/vuln/SNYK-JS-WS-7266574
- https://snyk.io/vuln/SNYK-JS-MICROMATCH-6838728

example/package.json

@@ -21,7 +21,7 @@
     "@voximplant/react-native-foreground-service": "^3.0.2",
     "clevertap-react-native": "^1.0.2",
     "react": "18.1.0",
-    "react-native": "0.70.6",
+    "react-native": "0.73.0",
     "react-native-permissions": "^3.8.0",
     "react-native-safe-area-context": "^4.5.0",
     "react-native-screens": "^3.20.0",