Bump omnibus-software from `70be4b4` to `a4f4849` in /omnibus
Bump omnibus-software from `70be4b4` to `a4f4849` in /omnibus

Bumps [omnibus-software](https://github.com/chef/omnibus-software) from `70be4b4` to `a4f4849`.
- [Release notes](https://github.com/chef/omnibus-software/releases)
- [Commits](https://github.com/chef/omnibus-software/compare/70be4b4e33059129d0533a7f7dea7ac4ff839f32...a4f484966e053bace9e58a4751da85584069fdcf)

---
updated-dependencies:
- dependency-name: omnibus-software
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
chef/chef-server,chef/chef-server,chef/chef-server,chef/chef-server,chef/chef-server,chef/chef-server