fix(deps): update dependency shiki to v3

Author: renovate[bot]

package.json

@@ -37,7 +37,7 @@
     "rehype-stringify": "^10.0.1",
     "remark": "^15.0.1",
     "remark-rehype": "^11.1.2",
-    "shiki": "^1.29.2",
+    "shiki": "^3.0.0",
     "tailwindcss": "^3.4.17",
     "typescript": "5.9.2",
     "zod": "^3.25.76"