Bump content/specs from fec6d75 to a12fa3b (#745)

Bumps [content/specs](https://github.com/scientific-python/specs) from `fec6d75` to `a12fa3b`.
- [Commits](scientific-python/specs@fec6d75...a12fa3b)

---
updated-dependencies:
- dependency-name: content/specs
  dependency-version: a12fa3b23810731ce91effd78b371f6d0fc8e51b
  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]