meta: bump sval from 0.6.8 to 0.6.9 in the mdx group (#8762)

Bumps the mdx group with 1 update: [sval](https://github.com/Siubaak/sval).


Updates `sval` from 0.6.8 to 0.6.9
- [Release notes](https://github.com/Siubaak/sval/releases)
- [Commits](Siubaak/sval@0.6.8...0.6.9)

---
updated-dependencies:
- dependency-name: sval
  dependency-version: 0.6.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: mdx
...

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

Author: dependabot[bot]

apps/site/package.json

@@ -71,7 +71,7 @@
     "remark-gfm": "~4.0.1",
     "remark-reading-time": "~2.1.0",
     "semver": "~7.7.4",
-    "sval": "^0.6.8",
+    "sval": "^0.6.9",
     "tailwindcss": "catalog:",
     "twoslash": "^0.3.6",
     "typescript": "catalog:",