Bump @babel/preset-env in /src/Elastic.Documentation.Site (#1805)

Bumps [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env) from 7.28.0 to 7.28.3.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.28.3/packages/babel-preset-env)

---
updated-dependencies:
- dependency-name: "@babel/preset-env"
  dependency-version: 7.28.3
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

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

@@ -35,7 +35,7 @@
   "private": true,
   "devDependencies": {
     "@babel/core": "7.28.0",
-    "@babel/preset-env": "7.28.0",
+    "@babel/preset-env": "7.28.3",
     "@babel/preset-react": "7.27.1",
     "@babel/preset-typescript": "7.27.1",
     "@eslint/js": "9.34.0",