Bump content/specs from 7fe6758 to 4457d66 (#779)

Bumps [content/specs](https://github.com/scientific-python/specs) from `7fe6758` to `4457d66`.
- [Commits](scientific-python/specs@7fe6758...4457d66)

---
updated-dependencies:
- dependency-name: content/specs
  dependency-version: 4457d66f478c047094c0748dfea90e1217d8fb6a
  dependency-type: direct:production
...

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