chore(deps-dev): bump shiki from 0.14.7 to 3.20.0

Bumps [shiki](https://github.com/shikijs/shiki/tree/HEAD/packages/shiki) from 0.14.7 to 3.20.0.
- [Release notes](https://github.com/shikijs/shiki/releases)
- [Commits](https://github.com/shikijs/shiki/commits/v3.20.0/packages/shiki)

---
updated-dependencies:
- dependency-name: shiki
  dependency-version: 3.20.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

examples/docs-site/package.json

@@ -25,7 +25,7 @@
     "@vitest/coverage-v8": "^3.2.4",
     "jsdom": "^27.0.0",
     "playwright": "^1.49.0",
-    "shiki": "^0.14.0",
+    "shiki": "^3.20.0",
     "typescript": "^5.7.2",
     "vite": "^6.4.1",
     "vitest": "^3.2.4"