(#7) Upgrade choco-theme and scripts

[st3phhays]

Description Of Changes

All of the dependencies that are use by choco-theme have been upgraded
to the latest versions where possible. These mostly include development
build tools used by gulp and also yarn itself.

One big change was the switch from node-sass to dart-sass. This was
done because node-sass is now depreciated and was reporting security
vulnerabilities. With this change, slight modifications were needed in
some of the scss files in order to get the gulp builds working again.
This also requires each gulpfile.js to be updated in each repository to
use sass instead of node-sass.

With these updates, and the pinning of some packages in the resolutions
area in the package.json file, all security vulnerabilities are
resolved.

Motivation and Context

See chocolatey/choco-theme#214

Testing

There are currently many bugs with yarn npm audit and also npm audit and both seem to be not reporting accurate information. An issue has been created to investigate this further chocolatey/choco-theme#218.

At the time, the best way of knowing that this resolves errors is by going to any of the repos listed below in the related issues list, and if the associated PR is closed, check to see if there are any dependabot errors on that repo. If there are a big yellow box appears on the repo and it is quite obvious.

Other testing:

1. Run gulp from the directory that contains the gulpfile.js
2. You may see depreciation warnings related to FontAwesome, but that will be addressed in this issue Upgrade to Font Awesome 6 choco-theme#193
3. The gulp task should still succeed

Change Types Made

• Bug fix (non-breaking change)
• Feature / Enhancement (non-breaking change)
• Breaking change (fix or feature that could cause existing functionality to change)
• PowerShell code changes.

Related Issue

• ENGTASKS-1433
• Upgrade choco-theme build dependencies choco-theme#214
• https://github.com/chocolatey/chocolatey.org/issues/172
• Upgrade choco-theme build dependencies docs#514
• https://github.com/chocolatey/blog/issues/174
• Upgrade choco-theme build dependencies boxstarter.org#20
• https://github.com/chocolatey/chocolateyfest/issues/11
• Upgrade choco-theme build dependencies home#175
• Upgrade choco-theme build dependencies #7
• https://github.com/chocolatey/choco-design-system/issues/1

Fixes #7

Change Checklist

• Requires a change to the documentation
• Documentation has been updated
• Tests to cover my changes, have been added
• All new and existing tests passed.
• PowerShell v2 compatibility checked.