Update react 18

[mendaomn]

Description

This PR updates the project to React 18. While doing so, related dependencies have been updates as well (see Changes section bellow)

Please note:

• @testing-library/react-hooks has been removed, as it does not support React 18, and replaced with the newly added renderHook function exported by @testing-library/react
• CloudScape depends on react-virtual, which does not support React 18. However according to the CloudScape team this is a warning that can be ignored and will be fixed in the future

Changes

• update to React 18
• update CloudScape to get support for React 18
• update @testing-library to get support for React 18
• remove @testing-library/react-hooks as it does not support React 18

How Has This Been Tested?

• unit test suite
• e2e test suite on a production build
• manually, tested most of the UI on Chrome, Firefox and Safari

PR Quality Checklist

• I added tests to new or existing code
• I removed hardcoded strings and used react-i18next library (useTranslation hook and/or Trans component), see an example here
• I made sure no sensitive info gets logged at any time in the codebase (see here) (e.g. no user info or details, no stacktraces, etc.)
• I made sure that any GitHub issue solved by this PR is correctly linked
• I checked that infrastructure/update_infrastructure.sh runs without any error
• I checked that npm run build builds without any error
• I checked that clusters are listed correctly
• I checked that a new cluster can be created (config is produced and dry run passes)
• I checked that login and logout work as expected

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