Added sorting keys before checking.

[artzub]

The reason is

const roles = [
  {
    roles: ['readonly'],
    allows: [{
      resources: ['/api/v1/user/.*'],
      permissions: ['get'],
    }],
  },
  {
    roles: ['admin'],
    allows: [
      {
        resources: ['/api/v1/user(/.*)?'],
        permissions: ['get', 'put', 'post', 'delete'],
      }
    ],
  },
  {
    roles: ['superadmin'],
    allows: [{
      resources: '.*',
      permissions: '*'
    }]
  }
];

Keys of buckets will be incorrectly sorted.

if make a request (role admin or superadmin):

DELETE /api/v1/user/someid,

then union method will find a wrong bucket /api/v1/user/.* that has just only one role readonly,
but it is not expected behavior.

After keys sorting we have at least the needed bucket = allows_/api/v1/user(/.*)? or for superadmin allows_.*