Bump the eui group across 1 directory with 2 updates

---
updated-dependencies:
- dependency-name: "@elastic/eui"
  dependency-version: 106.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: eui
- dependency-name: "@elastic/eui-theme-borealis"
  dependency-version: 3.3.0
  dependency-type: direct:development
  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

@@ -32,8 +32,8 @@
   "private": true,
   "devDependencies": {
     "@elastic/datemath": "5.0.3",
-    "@elastic/eui": "105.0.0",
-    "@elastic/eui-theme-borealis": "3.2.0",
+    "@elastic/eui": "106.0.0",
+    "@elastic/eui-theme-borealis": "3.3.0",
     "@emotion/css": "11.13.5",
     "@emotion/react": "11.14.0",
     "@eslint/js": "9.31.0",