Bump compatible version to WP 6.2

[ggutenberg]

Description of the Change

Bump compatible version to WP 6.2.
Bump @wordpress/env, @wordpress/scripts, and @wordpress/icons to latest.
Add .nvmrc pointing at latest LTS (18.15.0).

How to test the Change

Create a file called .wp-env.override.json in the root of this folder with the following contents:

{
  "core": "WordPress/WordPress#6.2-branch"
}

Then run the following commands:

nvm install
npm ci
npm run build
npm run env start
npm run env clean all
npm run postenv:start
npm run cypress:run

Changelog Entry

Changed - Upgrade @wordpress npm package dependencies.

Credits

Props @ggutenberg

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests pass.

[Sidsector9]

LGTM 👍

NPM commands run well.