Bump content/specs from 79fbd99 to 8c28a72 (#705)

Bumps [content/specs](https://github.com/scientific-python/specs) from `79fbd99` to `8c28a72`.
- [Commits](scientific-python/specs@79fbd99...8c28a72)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]