fix: add canvaskit-wasm dependency for astro-og-canvas

- Add canvaskit-wasm as required dependency for astro-og-canvas
- Fixes PNPM installation error in CI/CD pipeline

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Clickin

packages/docs/package.json

@@ -16,11 +16,12 @@
     "@astrojs/starlight": "^0.36.0",
     "astro": "^5.6.1",
     "astro-og-canvas": "^0.7.0",
+    "canvaskit-wasm": "^0.40.0",
     "sharp": "^0.34.2",
     "starlight-typedoc": "^0.21.3",
+    "stax-xml": "workspace:*",
     "typedoc": "^0.28.13",
     "typedoc-plugin-markdown": "^4.9.0",
-    "typescript": "^5.9.2",
-    "stax-xml": "workspace:*"
+    "typescript": "^5.9.2"
   }
 }