Update project angular.flow to v2.5.1

libgrabber updated project angular.flow to v2.5.1.

@flowjs

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "angular.flow",
    "repo": "flowjs/ng-flow",
    "files": {
      "basePath": "dist/",
      "include": ["ng-flow-standalone.js", "ng-flow-standalone.min.js", "ng-flow.js", "ng-flow.min.js"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/angular.flow",
    "localVersions": [],
    "remoteVersions": ["v0.1.0", "v1.0.0-beta", "v1.0.0-beta2", "v1.0.0-beta3", "v1.0.0", "v2.0.0", "v2.1.0", "v2.1.1", "v2.1.2", "v2.1.3", "v2.1.4", "v2.2.0", "v2.3.0", "v2.3.1", "v2.3.2", "v2.4.0", "v2.4.1", "v2.4.2", "v2.4.3", "v2.5.0", "v2.5.1"],
    "branchVersions": []
  },
  "version": "v2.5.1",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/angular.flow/2.5.1",
  "branch": "angular.flow/v2.5.1"
}
```