Bump omnibus from 9c0643a to 56015cb in /omnibus (#6670)

Bumps [omnibus](https://github.com/chef/omnibus) from `9c0643a` to `56015cb`.
- [Release notes](https://github.com/chef/omnibus/releases)
- [Commits](9c0643a3a4...56015cba34)

---
updated-dependencies:
- dependency-name: omnibus
  dependency-type: direct:production
...

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

omnibus/Gemfile.lock

@@ -8,10 +8,10 @@ GIT
 
 GIT
   remote: https://github.com/chef/omnibus.git
-  revision: 9c0643a3a44f3e7119789c2093bfc8edd78c74ff
+  revision: 56015cba349b547388df195158285156e974ae39
   branch: main
   specs:
-    omnibus (9.0.21)
+    omnibus (9.0.23)
       aws-sdk-s3 (~> 1.116.0)
       chef-cleanroom (~> 1.0)
       chef-utils (>= 15.4)
@@ -34,8 +34,8 @@ GEM
     artifactory (3.0.15)
     awesome_print (1.9.2)
     aws-eventstream (1.2.0)
-    aws-partitions (1.803.0)
-    aws-sdk-core (3.180.3)
+    aws-partitions (1.827.0)
+    aws-sdk-core (3.183.0)
       aws-eventstream (~> 1, >= 1.0.2)
       aws-partitions (~> 1, >= 1.651.0)
       aws-sigv4 (~> 1.5)
@@ -458,7 +458,7 @@ GEM
     vault (0.17.0)
       aws-sigv4
     webrick (1.8.1)
-    win32-api (1.10.1)
+    win32-api (1.10.1-universal-mingw32)
     win32-certstore (0.6.15)
       chef-powershell (>= 1.0.12)
       ffi