Office Webviewer doesn't like arrow functions and throws a syntax error

From the docs:
Include es5-shim especially if your browser doesn't support ECMAScript 5 - but every JS engine requires the es5-shim to correct broken implementations, so it's strongly recommended to always include it. Additionally, es5-shim should be loaded before es6-shim.

Remove legacy dependency;  It was used by some modules (statistics, oauth).. Those modules now ship with their own local copy of this package.

Bumps [highlight.js](https://github.com/highlightjs/highlight.js) from 10.1.2 to 10.4.1.
- [Release notes](https://github.com/highlightjs/highlight.js/releases)
- [Changelog](https://github.com/highlightjs/highlight.js/blob/master/CHANGES.md)
- [Commits](https://github.com/highlightjs/highlight.js/compare/10.1.2...10.4.1

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [jquery](https://github.com/jquery/jquery) from 3.4.1 to 3.5.0.
- [Release notes](https://github.com/jquery/jquery/releases)
- [Commits](https://github.com/jquery/jquery/compare/3.4.1...3.5.0

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

This reverts commit 0eeb0715.