Scan test directory by renovate

[mongolyy]

With the current base configuration, the following directories are ignored.

{
  "ignorePaths": [
    "**/node_modules/**",
    "**/bower_components/**",
    "**/vendor/**",
    "**/examples/**",
    "**/__tests__/**",
    "**/test/**",
    "**/tests/**",
    "**/__fixtures__/**"
  ]
}

As a result, the project's package.json in the test directory is ignored. To set IgnorePaths explicitly so that the test directory is also included.