Bump the tailwindcss group across 1 directory with 2 updates

Bumps the tailwindcss group with 2 updates in the /src/Elastic.Documentation.Site directory: [tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss) and [@tailwindcss/postcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/@tailwindcss-postcss).


Updates `tailwindcss` from 4.1.8 to 4.1.10
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tailwindlabs/tailwindcss/commits/v4.1.10/packages/tailwindcss)

Updates `@tailwindcss/postcss` from 4.1.8 to 4.1.10
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tailwindlabs/tailwindcss/commits/v4.1.10/packages/@tailwindcss-postcss)

---
updated-dependencies:
- dependency-name: tailwindcss
  dependency-version: 4.1.10
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: tailwindcss
- dependency-name: "@tailwindcss/postcss"
  dependency-version: 4.1.10
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: tailwindcss
...

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

Author: dependabot[bot]

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

@@ -34,7 +34,7 @@
     "@emotion/react": "^11.14.0",
     "@eslint/js": "9.28.0",
     "@r2wc/react-to-web-component": "^2.0.4",
-    "@tailwindcss/postcss": "4.1.8",
+    "@tailwindcss/postcss": "4.1.10",
     "@trivago/prettier-plugin-sort-imports": "5.2.2",
     "eslint": "9.28.0",
     "globals": "16.2.0",
@@ -58,7 +58,7 @@
     "htmx-ext-preload": "2.1.1",
     "htmx.org": "2.0.4",
     "select-dom": "9.3.1",
-    "tailwindcss": "4.1.8",
+    "tailwindcss": "4.1.10",
     "ua-parser-js": "2.0.3"
   }
 }