Resolve "Follow-up from "Bump Poetry version""

Summary

Temporarily disable the wetterdienst observation tests, as the API is not working properly.

Explain your context

https://github.com/earthobservations/wetterdienst/issues/1277

Please list breaking changes, new features or bugfixes

• Breaking changes:

  • wetterdienst observation currently not available

• New features:

• Bugfixes:

Closes #267 (closed)