Support latest version of Oh Dear API

[freekmurze]

Hi,

we will introduce breaking changes to our API soon. You can find more information here:

• Why we will be making breaking changes: https://ohdear.app/news-and-updates/why-we-will-be-making-breaking-changes-in-our-api-soon
• How to update: https://ohdear.app/docs/faq/how-do-i-update-to-the-latest-version-of-the-oh-dear-api

We've created a new version of our SDK as well. This branch of our SDK will be released as v4 on 23st of August 2025.

Could you update your package as well? If you have any questions or remarks on this, do let me know!