Bump diff and astro in /web

Bumps [diff](https://github.com/kpdecker/jsdiff) to 8.0.3 and updates ancestor dependency [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro). These dependencies need to be updated together.


Updates `diff` from 5.2.0 to 8.0.3
- [Changelog](https://github.com/kpdecker/jsdiff/blob/master/release-notes.md)
- [Commits](kpdecker/jsdiff@v5.2.0...v8.0.3)

Updates `astro` from 5.16.9 to 5.16.11
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/astro@5.16.11/packages/astro)

---
updated-dependencies:
- dependency-name: diff
  dependency-version: 8.0.3
  dependency-type: indirect
- dependency-name: astro
  dependency-version: 5.16.11
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

web/package-lock.json

@@ -14,7 +14,7 @@
   "dependencies": {
     "@astrojs/starlight": "^0.36.2",
     "@multitheftauto/starlight-theme-mtasa": "^1.4.1",
-    "astro": "^5.16.9",
+    "astro": "^5.16.11",
     "glob": "^11.1.0",
     "js-yaml": "^4.1.0",
     "marked": "^15.0.6",