meta: bump shiki from 3.1.0 to 3.2.1

Bumps [shiki](https://github.com/shikijs/shiki/tree/HEAD/packages/shiki) from 3.1.0 to 3.2.1.
- [Release notes](https://github.com/shikijs/shiki/releases)
- [Commits](https://github.com/shikijs/shiki/commits/v3.2.1/packages/shiki)

---
updated-dependencies:
- dependency-name: shiki
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

apps/site/package.json

@@ -58,7 +58,7 @@
     "remark-gfm": "~4.0.1",
     "remark-reading-time": "~2.0.1",
     "semver": "~7.7.1",
-    "shiki": "~3.1.0",
+    "shiki": "~3.2.1",
     "sval": "^0.6.1",
     "tailwindcss": "~3.4.17",
     "unist-util-visit": "~5.0.0",