Guide: migrating to v5

Assuming you are already in v4, migrating to v5 will be easy. If you are not in v4 yet, we recommend you to follow the proper guide to migrate to it.

Overview

Support for ESLint v8
Drop support for Node v10. Required node version is now ^12.22.0 || ^14.17.0 || >=16.0.0. Node v10 was EOL'd in April 2021, and ESLint v8 dropped support for it too.
Update dependencies
no-debug is now called no-debugging-utils
no-render-in-setup is now enabled by default in the Angular, React & Vue configs
no-unnecessary-act's isStrict option is now true by default
no-unnecessary-act is now enabled by default in the React config
no-wait-for-multiple-assertions is now enabled by default in all configs
no-wait-for-side-effects is now enabled by default in all configs
no-wait-for-snapshot is now enabled by default in all configs
prefer-presence-queries is now enabled by default in all configs
prefer-query-by-disappearance is now enabled by default in all configs

eslint-plugin-testing-library supports both ESLint v7 and v8, so you are fine with either version
Making sure you are using a compatible Node version (^12.22.0 || ^14.17.0 || >=16.0.0), and update it if it's not the case
Renaming testing-library/no-debug to testing-library/no-debugging-utils if you were referencing it manually somewhere
Being aware of new rules enabled in Shared Configs which can lead to new reported errors