Bump @elastic/highlightjs-esql in /src/Elastic.Documentation.Site (#1849)

Bumps [@elastic/highlightjs-esql](https://github.com/elastic/highlightjs-esql) from 1.1.0 to 1.2.0.
- [Commits](elastic/highlightjs-esql@1.1.0...1.2.0)

---
updated-dependencies:
- dependency-name: "@elastic/highlightjs-esql"
  dependency-version: 1.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

@@ -70,7 +70,7 @@
   ],
   "dependencies": {
     "@elastic/eui": "106.4.0",
-    "@elastic/highlightjs-esql": "1.1.0",
+    "@elastic/highlightjs-esql": "1.2.0",
     "@emotion/css": "11.13.5",
     "@emotion/react": "11.14.0",
     "@microsoft/fetch-event-source": "2.0.1",