Add dvh, svh, lvh, dvw, svw, lvw as allowed units in .stylelintrc.json

Problem/Motivation

If I add something like this to my site and run the stylelint, I get an error (unknown unit)

.class {
  height: 100dvh;
}

Steps to reproduce

Described above.

Here's an explainer about these units: https://dev.to/frehner/css-vh-dvh-lvh-svh-and-vw-units-27k4

Proposed resolution

Add the following to the allow units list: dvh, svh, lvh, dvw, svw, lvw since they are all valid CSS units (especially in an era of mobile design).

Remaining tasks

Create MR

User interface changes

None

Introduced terminology

None

API changes

None

Data model changes

None

Release notes snippet

dvh, svh, lvh, dvw, svw, lvw are now allowed units in our .stylelintrc.json config.