Node min version to 16 & other dependency updates

Hey packagers!

• #1235 Dropping support for Node 14 (16 is new min) and allowing svelte 4 (@weaverryan)

• #1185 Bump babel-loader from 8.2.5 to 9.1.2 (@dppanteon) - the
  CHANGELOG for babel 9
  does not list any breaking changes besides increasing the minimum Node version.

• #1224 Allow fork-ts-checker-webpack-plugin ^8.0 and ^9.0 (@buffcode)

Upgrading

Run:

npm install "@symfony/webpack-encore@^4.5.0" --save-dev

Or:

yarn upgrade "@symfony/webpack-encore@^4.5.0"

Changes: v4.4.0...v4.5.0

Happy Packing!