Update project paperjs to v0.9.18

libgrabber updated project paperjs to v0.9.18.



### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "paperjs",
    "repo": "paperjs/paper.js",
    "files": {
      "basePath": "dist/",
      "include": ["*.js"],
      "exclude": []
    },
    "path": "/home/aleksandar/projects/jsdelivr-aleksandarabot/files/paperjs",
    "localVersions": [],
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    "branchVersions": []
  },
  "version": "v0.9.18",
  "updated": true,
  "updatePath": "/home/aleksandar/projects/jsdelivr-aleksandarabot/files/paperjs/0.9.18",
  "branch": "paperjs/v0.9.18"
}
```