Bump the tailwindcss group across 1 directory with 2 updates (#2252)

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 4.1.16 to 4.1.17
- [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/v4.1.17/packages/tailwindcss)

Updates `@tailwindcss/postcss` from 4.1.16 to 4.1.17
- [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/v4.1.17/packages/@tailwindcss-postcss)

---
updated-dependencies:
- dependency-name: tailwindcss
  dependency-version: 4.1.17
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: tailwindcss
- dependency-name: "@tailwindcss/postcss"
  dependency-version: 4.1.17
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: tailwindcss
...

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

Author: dependabot[bot]

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

@@ -51,7 +51,7 @@
     "@elastic/synthetics": "1.19.0",
     "@eslint/js": "9.39.0",
     "@parcel/reporter-bundle-analyzer": "2.16.0",
-    "@tailwindcss/postcss": "4.1.16",
+    "@tailwindcss/postcss": "4.1.17",
     "@testing-library/jest-dom": "6.9.1",
     "@testing-library/react": "16.3.0",
     "@testing-library/user-event": "14.6.1",
@@ -98,7 +98,7 @@
     "katex": "^0.16.25",
     "marked": "16.4.0",
     "select-dom": "9.4.0",
-    "tailwindcss": "4.1.16",
+    "tailwindcss": "4.1.17",
     "tippy.js": "6.3.7",
     "ua-parser-js": "2.0.6",
     "uuid": "11.1.0",