title: Can't update private dependencies with dependabot
body: <p><strong>Context</strong></p>
  <p>I have a library of private components stored in Bit.dev as my source of truth.</p>
  <p>To use them I must have a token and the registry information in my .npmrc file and with this token I can install all of my components anywhere I want.</p>
  <pre><code>/**.npmrc file example **/
  
  @scopename:registry=https://node.bit.dev/
  //node.bit.dev/:_authToken=my-really-secure-token
  </code></pre>
  <p><strong>Problem</strong></p>
  <p>So, I am trying to use dependabot to update these dependencies on my projects but every time dependabot do the check it fails on authentication.</p>
  <pre><code>updater | INFO &lt;job_number&gt; Checking if @owner/scope.ui.teste 0.0.2 needs updating
    proxy | 2022/03/11 18:18:35 [034] GET https://node.bit.dev:443/@owner%2Fscope.ui.teste
    proxy | 2022/03/11 18:18:36 [034] 404 https://node.bit.dev:443/@owner%2Fscope.ui.teste
  updater | INFO &lt;job_number&gt; Handled error whilst updating @owner/scope.ui.teste: private_source_authentication_failure {:source=&gt;&quot;node.bit.dev&quot;}
  </code></pre>
  <p>My <strong>dependabot.yaml</strong></p>
  <pre><code>version: 2
  registries:
    bit-components:
      type: npm-registry
      url: https://registry.npmjs.org
      token: ${{secrets.NPM_RC_TOKEN}}
  updates:
    - package-ecosystem: &quot;npm&quot;
      directory: &quot;/&quot;
      registries:
        - bit-components
      schedule:
        interval: &quot;daily&quot;
  </code></pre>
  <p>I have tried change the url to:</p>
  <ul>
  <li>url: <a href="https://npm.pkg.github.com" rel="nofollow noreferrer">https://npm.pkg.github.com</a></li>
  <li>url: <a href="https://registry.npmjs.org/https://node.bit.dev/" rel="nofollow noreferrer">https://registry.npmjs.org/https://node.bit.dev/</a></li>
  <li>url: <a href="https://node.bit.dev/" rel="nofollow noreferrer">https://node.bit.dev/</a></li>
  </ul>
  <p>And also replaced the key token to use username and password for authentication but none of the changes solves the problem or change the error message. What can I do?</p>