Upgrade Expo from 0.49 to 0.51

[dkaschl]

• Description
  • Type of change
• Testing locally
• Checklist

Description

• Upgrade of Expo framework from previous version 0.49 to 0.51
• Updated package.json and all necessary libraries to run smooth install with npm install and npx expo install.

Fixes # (issue number)

Type of change

Please delete options that are not relevant

• Breaking change(fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Testing locally

• Start with a fresh setup. No node_modules, clean checkout and then follow the default project setup instructions using npm install and so on.
• The app should start and all functionality should still be working

Checklist

• [] My code follows the style guidelines of this project
• [] I have performed a self-review of my own code
• [] I have commented my code, particularly in hard-to-understand areas
• [] I have removed any unnecessary comments or console logging
• [] I have made corresponding changes to the documentation (if required)
• [] I have addressed accessibility, if needed
• [] I have followed best practices, e.g. NativeBase approaches and theming
• [] I have checked the app in dark mode, if making front-end design changes
• [] My changes generate no new warnings
• [] I have added tests that prove my fix is effective or that my feature works
• [] New and existing unit tests pass locally with my changes
• [] I have updated the version numbers in package.json files in the app and/or api directories as needed