Bump omnibus-software from `fb0fa04` to `a1e9c90` in /omnibus
Bump omnibus-software from `fb0fa04` to `a1e9c90` in /omnibus

Bumps [omnibus-software](https://github.com/chef/omnibus-software) from `fb0fa04` to `a1e9c90`.
- [Release notes](https://github.com/chef/omnibus-software/releases)
- [Commits](https://github.com/chef/omnibus-software/compare/fb0fa049edd5d1c5109ef22b8c974bf3d12c81a8...a1e9c90875f9a6267bdbf9742881178245411c52)

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