chore(deps): bump shiki from 1.2.3 to 1.6.0 (#1149)

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

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package.json

@@ -81,7 +81,7 @@
     "rfdc": "^1.3.1",
     "rimraf": "^5.0.7",
     "serve-handler": "^6.1.5",
-    "shiki": "^1.2.3",
+    "shiki": "^1.6.0",
     "source-map-support": "^0.5.21",
     "to-vfile": "^8.0.0",
     "toml": "^3.0.0",