Fix deprecated hashValue and hashList

[syaifakmal]

No description provided.

[MAlazhariy]

I tested it on the latest version of Flutter 3.29.3, and the issues were resolved successfully.

For those who want to merge as quickly as possible, you don't have to wait for the PR to merge; you can easily implement this change by typing this command in your pubspec.yaml file:

  timelines:
    git:
      url: https://github.com/syaifakmal/timelines

Or you can load the local file into your project and use it within the pubspec.yaml file.

[MAlazhariy]

Thanks a lot for your contribution! 🙌
I tested the changes on the latest stable Flutter version (3.19.3), and everything works smoothly now.
I appreciate you taking the time to update the deprecated hashValues and hashList functions.

Looking forward to seeing this merged soon!