Bump Omnibus to 9.0.19.2

- Updates Omnibus gem to 9.0.19.2 so GitFetcher
  selects the exact branch instead of the first
  branch when multiple branches match the
  requested version.

Closes https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/8443

Changelog: changed

Signed-off-by: Balasankar 'Balu' C <balasankar@gitlab.com>

Author: balasankarc

Gemfile.lock

@@ -1,7 +1,7 @@
 GIT
   remote: https://gitlab.com/gitlab-org/omnibus.git
-  revision: bed44a1bd07586f2338ffc04e9fc25b74154ad63
-  tag: 9.0.19.1
+  revision: f48d9cd3d9e275da9cab4fff229d9520da161ba7
+  tag: 9.0.19.2
   specs:
     omnibus (9.0.19)
       aws-sdk-s3 (~> 1.116.0)

OMNIBUS_GEM_VERSION

@@ -1 +1 @@
-9.0.19.1
+9.0.19.2