Bump shiki from 1.4.0 to 1.5.1

Bumps [shiki](https://github.com/shikijs/shiki/tree/HEAD/packages/shiki) from 1.4.0 to 1.5.1.
- [Release notes](https://github.com/shikijs/shiki/releases)
- [Changelog](https://github.com/shikijs/shiki/blob/main/CHANGELOG.md)
- [Commits](https://github.com/shikijs/shiki/commits/v1.5.1/packages/shiki)

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

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

Author: dependabot[bot]

package.json

@@ -36,6 +36,6 @@
     "markdown-it-deflist": "^3.0.0",
     "markdown-it-table": "^4.1.1",
     "sass": "^1.77.0",
-    "shiki": "^1.4.0"
+    "shiki": "^1.5.1"
   }
 }