feature: modernize output, reducing bundle size

[SimonSiefke]

This changes the typescript output target from ES2020 to ES2022. Trying it out locally, the modern code is still compatible with node 14, 16, 18 and 20.

Fixes #2286

Checklist

• I have read the documentation.
• I have included a pull request description of my changes.
• I have included some tests.
• If it's a new feature, I have included documentation updates in both the README and the types.

[sindresorhus]

Thanks, but es2021 is the correct choice. It will be available in the next release.