Bump @elastic/eui

Bumps the eui group with 1 update in the /src/Elastic.Documentation.Site directory: [@elastic/eui](https://github.com/elastic/eui/tree/HEAD/packages/eui).


Updates `@elastic/eui` from 106.4.0 to 106.6.0
- [Release notes](https://github.com/elastic/eui/releases)
- [Changelog](https://github.com/elastic/eui/blob/main/packages/eui/i18ntokens_changelog.json)
- [Commits](https://github.com/elastic/eui/commits/v106.6.0/packages/eui)

---
updated-dependencies:
- dependency-name: "@elastic/eui"
  dependency-version: 106.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: eui
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/Elastic.Documentation.Site/package-lock.json

@@ -69,7 +69,7 @@
     "defaults"
   ],
   "dependencies": {
-    "@elastic/eui": "106.4.0",
+    "@elastic/eui": "106.6.0",
     "@elastic/highlightjs-esql": "1.2.0",
     "@emotion/css": "11.13.5",
     "@emotion/react": "11.14.0",