Releaser removes the `private` field in `package.json` file.

[trungleduc]

Description

• The commit created by the releaser removes my private field in the package.json file. For example this commit:

Reproduce

Release a jupyterlab extension with a private npm package.

Expected behavior

This field is not touched.

Context

• Operating System and version:
• Browser and version:
• Jupyter Server version:

Troubleshoot Output

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Command Line Output

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Browser Output

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