Upgrade app from v0.80.0 to v0.81.4

[louicoder]

📄 Description

Upgrade the project’s React Native version from 0.81.0 to the latest stable patch release 0.81.4 to ensure compatibility, security, and access to recent fixes.

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✅ Tasks

• Update package.json to use react-native@0.81.4
• Run yarn install to update dependencies
• Verify iOS and Android build processes work correctly
• Test app startup and basic functionality on both platforms
• Update documentation (if any version references exist)

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🔍 Acceptance Criteria

• Project builds successfully on iOS and Android
• No breaking changes introduced by the upgrade
• All existing tests pass
• App runs without regressions