fix: allow unsetting storage secrets

[Panaetius]

/deploy #notest

[Panaetius]

This change is part of the following stack:

• fix: allow unsetting storage secrets #415 ◀

_{Change managed by git-spice.}

[leafty]

Note: This is also implemented for data connectors secrets in #413.

[coveralls]

Pull Request Test Coverage Report for Build 11211522036

Details

• 3 of 10 (30.0%) changed or added relevant lines in 3 files are covered.
• 3 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.06%) to 90.501%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
components/renku_data_services/storage/db.py	1	8	12.5%

Files with Coverage Reduction	New Missed Lines	%
components/renku_data_services/base_api/auth.py	1	89.61%
components/renku_data_services/crc/models.py	1	84.57%
components/renku_data_services/users/db.py	1	94.18%

Totals
Change from base Build 11210177050:	-0.06%
Covered Lines:	9546
Relevant Lines:	10548

---

💛 - Coveralls

[RenkuBot]

You can access the deployment of this PR at https://renku-ci-ds-415.dev.renku.ch

[leafty]

Code change to db.py is good but the schema change is invalid:

[leafty]

LGTM

[RenkuBot]

Tearing down the temporary RenkuLab deplyoment for this PR.