dev: typescript 4.9.5, TS target ES2021, TS module ES2020, typedoc ~0.25.3 by lucas-koehler · Pull Request #2241

dev: typescript 4.9.5, TS target ES2021, TS module ES2020, typedoc ~0.25.3 by lucas-koehler · Pull Request #2241 · eclipsesource/jsonforms

….25.3

- Upgrade all packages to use  typescript `~4.9.5`
- Update typedoc version to `~0.25.3` and remove custom typedoc theme
- Adapt @mui/icons-material imports in material-renderers to work with
  later typescript versions. The used imports broke starting with 4.2.4
- Fix typescript target from ESNext to ES2021 because
- Fix typescript module from ESNext to ES2020

Remove ESNext from typescript configurations because it leads to changes
in output when updating the typescript version.
For `target` ESNext is explicitly discouraged in the typescript docs.