fix(deps): update module github.com/sapcc/go-api-declarations to v1.12.7

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/sapcc/go-api-declarations	v1.12.6 -> v1.12.7

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Release Notes

sapcc/go-api-declarations (github.com/sapcc/go-api-declarations)

### [`v1.12.7`](https://redirect.github.com/sapcc/go-api-declarations/compare/v1.12.6...v1.12.7) [Compare Source](https://redirect.github.com/sapcc/go-api-declarations/compare/v1.12.6...v1.12.7)

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