fix(version): handle deps property missing due to outdated lockfile

[fahslaj]

Description

Handles the case that the dependencies or devDependencies property is not defined in package.json, but does exist in package-lock.json.

Motivation and Context

This case should only happen if the package.json file is updated and npm install is not run afterwards to update the lockfile. However, now Lerna will handle this case gracefully.

#3546

How Has This Been Tested?

This has been tested manually and covered by a new unit test.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (change that has absolutely no effect on users)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.