Use fixed npm dependency versions

[atextor]

Description

Please include a summary of the changes and the related issue. List any dependencies that are required for this change.

Fixes #364

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• [-] My code follows the style guidelines of this project
• I have performed a self-review of my own code
• [-] I have commented my code, particularly in hard-to-understand areas
• [-] I have made corresponding changes to the documentation
• My changes generate no new warnings
• [-] I have added tests that prove my fix is effective or that my feature works