feature request - Angular upgrade to version 18

[andjelikastanic]

REQUIRED: Before filing a feature request

Change each [ ] to [x] when you have done it.

• My issue title starts with [feature request]
• I have thoroughly read through the README, and the dragula docs.
• I have searched through the ng2-dragula issues for related problems, including closed issues, and I didn't find anything.

Is your feature request related to a problem? Please describe.

Can you upgrade lib to Angular 18? If not ,is it possible for us as external contributors to upgrade?