JS: Updated packages, fixed lint issue

Left eslint as old due to eslint-config-airbnb-base not yet being
comptible.
Some SASS deprecations to solve.

Author: ssddanbrown

dev/docs/development.md

@@ -3,7 +3,7 @@
 All development on BookStack is currently done on the `development` branch. 
 When it's time for a release the `development` branch is merged into release with built & minified CSS & JS then tagged at its version. Here are the current development requirements:
 
-* [Node.js](https://nodejs.org/en/) v18.0+
+* [Node.js](https://nodejs.org/en/) v20.0+
 
 ## Building CSS & JavaScript Assets