Add 'Staying up to date' page to WalletKit upgrade section

- Add new documentation page explaining importance of keeping WalletKit updated
- Include platform-specific release links for Kotlin, Swift, JS/RN, and Flutter
- Update navigation structure to include new page in upgrade section
- Use correct Kotlin repository URL: https://github.com/reown-com/reown-kotlin/releases

Co-Authored-By: ignacio.rivera@reown.com <ignacio.rivera@reown.com>

Author: devin-ai-integration[bot]

docs.json

@@ -883,6 +883,7 @@
                   {
                     "group": "Upgrade",
                     "pages": [
+                      "walletkit/upgrade/staying-up-to-date",
                       {
                         "group": "Web3Wallet to Reown WalletKit",
                         "pages": [

walletkit/upgrade/staying-up-to-date.mdx

@@ -0,0 +1,34 @@
+---
+title: Staying up to date
+sidebarTitle: Staying up to date
+---
+
+## Why Keep WalletKit Updated?
+
+Keeping your WalletKit SDK updated to the latest version is crucial for maintaining optimal performance, security, and compatibility with the evolving Web3 ecosystem. Regular updates ensure:
+
+- **Security patches** - Protection against newly discovered vulnerabilities
+- **Bug fixes** - Resolution of known issues and improved stability  
+- **New features** - Access to the latest WalletConnect protocol enhancements
+- **Protocol compatibility** - Seamless interaction with updated dApps and wallets
+- **Performance improvements** - Optimizations for better user experience
+
+## Latest Releases by Platform
+
+Stay current with the latest WalletKit releases for your development platform:
+
+### Kotlin (Android)
+Check the latest Kotlin releases for Android development:
+- [Reown Kotlin Releases](https://github.com/reown-com/reown-kotlin/releases)
+
+### Swift (iOS)
+Stay updated with the latest Swift releases for iOS development:
+- [Reown Swift Releases](https://github.com/reown-com/reown-swift/releases)
+
+### JavaScript / React Native
+Monitor JavaScript and React Native package updates:
+- [Reown WalletKit JS Releases](https://github.com/reown-com/reown-walletkit-js/releases)
+
+### Flutter
+Track Flutter package versions on pub.dev:
+- [Reown WalletKit Flutter Package](https://pub.dev/packages/reown_walletkit)