chore(deps-dev): bump shiki from 1.24.2 to 2.1.0

Bumps [shiki](https://github.com/shikijs/shiki/tree/HEAD/packages/shiki) from 1.24.2 to 2.1.0.
- [Release notes](https://github.com/shikijs/shiki/releases)
- [Commits](https://github.com/shikijs/shiki/commits/v2.1.0/packages/shiki)

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

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

package.json

@@ -52,7 +52,7 @@
 		"postcss": "^8.5.1",
 		"prettier": "^3.4.2",
 		"prettier-plugin-svelte": "^3.3.3",
-		"shiki": "^1.24.2",
+		"shiki": "^2.1.0",
 		"svelte": "^5.19.2",
 		"svelte-check": "^4.1.4",
 		"svelte-eslint-parser": "^0.43.0",