build(deps): bump deps/zlib from 79a0e44 to ac8f12c

Bumps [deps/zlib](https://github.com/madler/zlib) from `79a0e44` to `ac8f12c`.
- [Release notes](https://github.com/madler/zlib/releases)
- [Commits](madler/zlib@79a0e44...ac8f12c)

---
updated-dependencies:
- dependency-name: deps/zlib
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>