Bump omnibus-software from a9b13a0 to 7bb8c7b in /omnibus

Bumps [omnibus-software](https://github.com/chef/omnibus-software) from `a9b13a0` to `7bb8c7b`.
- [Release notes](https://github.com/chef/omnibus-software/releases)
- [Commits](a9b13a09c2...7bb8c7b4fd)

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

Signed-off-by: dependabot[bot] <support@github.com>

omnibus/Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/chef/omnibus-software.git
-  revision: a9b13a09c2f89e4618225dd41b2fd08f2150a1ba
+  revision: 7bb8c7b4fd2cc5829fba9d52df1dac683fd88069
   branch: main
   specs:
     omnibus-software (4.0.0)
@@ -34,8 +34,8 @@ GEM
     artifactory (3.0.15)
     awesome_print (1.9.2)
     aws-eventstream (1.2.0)
-    aws-partitions (1.595.0)
-    aws-sdk-core (3.131.1)
+    aws-partitions (1.603.0)
+    aws-sdk-core (3.131.2)
       aws-eventstream (~> 1, >= 1.0.2)
       aws-partitions (~> 1, >= 1.525.0)
       aws-sigv4 (~> 1.1)
@@ -248,7 +248,7 @@ GEM
       tomlrb (>= 1.2, < 3.0)
       tty-box (~> 0.6)
       tty-prompt (~> 0.20)
-    license_scout (1.3.1)
+    license_scout (1.3.2)
       ffi-yajl (~> 2.2)
       mixlib-shellout (>= 2.2, < 4.0)
       toml-rb (>= 1, < 3)
@@ -264,7 +264,7 @@ GEM
       mixlib-log
     mixlib-authentication (3.0.10)
     mixlib-cli (2.1.8)
-    mixlib-config (3.0.9)
+    mixlib-config (3.0.27)
       tomlrb
     mixlib-install (3.12.16)
       mixlib-shellout
@@ -278,7 +278,7 @@ GEM
       ffi-win32-extensions (~> 1.0.3)
       win32-process (~> 0.9)
       wmi-lite (~> 1.0)
-    mixlib-shellout (3.2.7-x64-unknown)
+    mixlib-shellout (3.2.7-x64-mingw-ucrt)
       chef-utils
       ffi-win32-extensions (~> 1.0.3)
       win32-process (~> 0.9)
@@ -384,7 +384,7 @@ GEM
     toml-rb (2.1.2)
       citrus (~> 3.0, > 3.0)
     tomlrb (1.3.0)
-    train-core (3.9.2)
+    train-core (3.10.1)
       addressable (~> 2.5)
       ffi (!= 1.13.0)
       json (>= 1.8, < 3.0)