Added support for parameter series_type with proper error support

[avdaredevil]

About:

• Added support for parameter series_type with proper error support
• Generated package.lock (which patches half of the vulnerabilities in this project, others need to simply be updated manually to better non-deprecated versions)

Why?

• The API as it stands doesn't work anymore: (your fiddle)
• Docs where this parameter is required and others

[wagenaartje]

Thank you for this pull request! About the series_type, I am working on a small update that incorporates this more dynamically based on your work (it will check if series_type is in fact required for the given indicator, this is not always the case). Regarding the vulnerabilities, I will have a look at this soon.

[avdaredevil]

Should I assume this has been added in?