[SITE-1547] Update CODEOWNERS for new team names (#628)

* Bump braces from 3.0.2 to 3.0.3 in the npm_and_yarn group (#626)

Bumps the npm_and_yarn group with 1 update: [braces](https://github.com/micromatch/braces).


Updates `braces` from 3.0.2 to 3.0.3
- [Changelog](https://github.com/micromatch/braces/blob/master/CHANGELOG.md)
- [Commits](micromatch/braces@3.0.2...3.0.3)

---
updated-dependencies:
- dependency-name: braces
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Update CODEOWNERS for new team names

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

CODEOWNERS

@@ -1,4 +1 @@
-# Code owners. See:
-# https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
-
-* @pantheon-systems/cms-ecosystem
+* @pantheon-systems/site-experience