feature/82522 update yarn may 2021

[janhagevold]

Description

• code changes required for @equinor/eds-core-react, mainly removing destructuring objects. Popover now uses anchorEl.
• eds updated Typography tokens (Reduced line-height on h1, h2 & h3)
• config changes for webpack, add plugin setting for eds-core-react not finding process defined
• config changes for jest, testEnvironment explicitly set to jsdom (faster node environment is now available and can be set on per file basis).

/**
 * @testEnvironment jsdom OR node
 */

• config changes babel, to get rid of error messages when running tests
• config changes husky, hooks are now found in .husky folder

Completes: AB#82522

Checklist:

• I have performed a self-review of my own code.
• I have linked my DevOps task using the AB# tag.
• My code is easy to read, and comments are added where needed.
• My code is covered by tests.