meta: bump shiki from 1.17.7 to 1.18.0 (#106)

Bumps [shiki](https://github.com/shikijs/shiki/tree/HEAD/packages/shiki) from 1.17.7 to 1.18.0.
- [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/v1.18.0/packages/shiki)

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

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

Author: dependabot[bot]

package-lock.json

@@ -39,7 +39,7 @@
     "remark-rehype": "^11.1.0",
     "remark-stringify": "^11.0.0",
     "semver": "^7.6.3",
-    "shiki": "^1.17.7",
+    "shiki": "^1.18.0",
     "unified": "^11.0.5",
     "unist-builder": "^4.0.0",
     "unist-util-find-after": "^5.0.0",