fix(deps): update dependency shiki to v2

Author: renovate[bot]

packages/markdown-remark-processor/package.json

@@ -53,7 +53,7 @@
     "remark-parse": "^11.0.0",
     "remark-rehype": "^11.1.1",
     "remark-smartypants": "^3.0.2",
-    "shiki": "^1.23.1",
+    "shiki": "^2.0.0",
     "unified": "^11.0.5",
     "unist-util-remove-position": "^5.0.0",
     "unist-util-visit": "^5.0.0",