Cdsapi

Forward compatibility preperation for the new CDS and ADS infrastructure (the CADS)

What's Changed
* Allow CI to access secrets once PR is approved by dtip in https://github.com/ecmwf/cdsapi/pull/75
* fix use of key and url from env vars by malmans2 in https://github.com/ecmwf/cdsapi/pull/92
* COPDS-1531: beta api by malmans2 in https://github.com/ecmwf/cdsapi/pull/95
* quick fixes for setuptools by EddyCMWF in https://github.com/ecmwf/cdsapi/pull/99

New Contributors
* dtip made their first contribution in https://github.com/ecmwf/cdsapi/pull/75
* malmans2 made their first contribution in https://github.com/ecmwf/cdsapi/pull/92
* matrss made their first contribution in https://github.com/ecmwf/cdsapi/pull/94

**Full Changelog**: https://github.com/ecmwf/cdsapi/compare/0.6.1...0.7.0

**Full Changelog**: https://github.com/ecmwf/cdsapi/compare/0.6.0...0.6.1

- Assertion error for cdsapi key problems
- consistent default selection for verify(=True)
- Updated python versions for tests
- additional code QA tests (and code changes to pass tests)
- header info fo QoS
- bugfix for the timeout and sleep
- change to logging config

New Contributors
* kanderso-nrel made their first contribution in https://github.com/ecmwf/cdsapi/pull/47
* keul made their first contribution in https://github.com/ecmwf/cdsapi/pull/54
* LukeJones123 made their first contribution in https://github.com/ecmwf/cdsapi/pull/53
* gbiavati made their first contribution in https://github.com/ecmwf/cdsapi/pull/70

**Full Changelog**: https://github.com/ecmwf/cdsapi/compare/0.5.1...0.6.0