☂️ Migrate clients away from deprecated wrappers

[Gerrit91]

Follow-up of #81.

Affected repos:

• Implement tenant repository for tenant service. metal-apiserver#15
• Update masterdata-api depedency. metal-api#627
• https://github.com/fi-ts/cloud-api/pull/37
• https://git.f-i-ts.de/cloud-native/accounting-api/-/merge_requests/79
• https://github.com/metal-stack-cloud/api-server/pull/593
• https://github.com/metal-stack-cloud/accounting/pull/72

[Gerrit91]

For all the public repos this was done and goes into v0.21.9. I close it, the other projects have the PRs created and will be merged soon.