fix(deps): update dependency shiki to v2

Author: renovate[bot]

package.json

@@ -53,7 +53,7 @@
     "rehype-pretty-code": "0.10.1",
     "rehype-slug": "6.0.0",
     "remark-gfm": "3.0.1",
-    "shiki": "0.14.7",
+    "shiki": "2.1.0",
     "swr": "2.2.5"
   },
   "devDependencies": {