`npm install` reports 9 vulnerabilities on `master`

[ViToni]

Please provide details about:

• What you're trying to do: npm install
• What happened:

  
  $ npm install
  npm WARN deprecated source-map-url@0.4.1: See https://github.com/lydell/source-map-url#deprecated
  npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
  npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
  npm WARN deprecated source-map-resolve@0.5.3: See https://github.com/lydell/source-map-resolve#deprecated
  npm WARN deprecated querystring@0.2.1: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
  npm WARN deprecated fsevents@1.2.13: The v1 package contains DANGEROUS / INSECURE binaries. Upgrade to safe fsevents v2
  npm WARN deprecated chokidar@2.1.8: Chokidar 2 does not receive security updates since 2019. Upgrade to chokidar 3 with 15x fewer dependencies

added 972 packages, and audited 973 packages in 2m

153 packages are looking for funding run npm fund for details

9 vulnerabilities (1 low, 8 high)

To address issues that do not require attention, run: npm audit fix

To address all issues (including breaking changes), run: npm audit fix --force

Run npm audit for details.

* What you expected to happen: dependecies should be, if not uptodate, at least "clean"

Happend on `master`: 2235846a3708171e01a3076e354292c6a6d835e1

[ViToni]

It seems most of the outdated packages reported are transitive dependecies of gulp which hasn't seen updates in years and gulp is only used at build time to copy things around. There is only one dependecy which can be updated: mathjax