* Switch to pydantic v2, including pydantic-settings.
* Use tenacity rather than retrying.
- Drop patch continue-to-use-pydantic-1.patch, no longer required.
- Refresh switch-to-pyrfc3339.patch, make it smaller and easier to rebase.
- Add patches:
* switch-to-poetry-core.patch
* support-new-pydantic-settings.patch
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-qcs-api-client?expand=0&rev=9
