Bump version to 15.9.1 by Chef Expeditor

Obvious fix; these changes are the result of automation not creative thinking.

CHANGELOG.md

@@ -1,16 +1,17 @@
 # Chef Server Changelog
 <!-- usage documentation: http://expeditor-docs.es.chef.io/configuration/changelog/ -->
-<!-- latest_release 15.9.0 -->
-## [15.9.0](https://github.com/chef/chef-server/tree/15.9.0) (2023-11-24)
+<!-- latest_release 15.9.1 -->
+## [15.9.1](https://github.com/chef/chef-server/tree/15.9.1) (2023-11-24)
 
 #### Merged Pull Requests
-- added knife to omnibus dependency list. [#3739](https://github.com/chef/chef-server/pull/3739) ([sreepuramsudheer](https://github.com/sreepuramsudheer))
+- Update rack version from 2.2.6.2 -&gt; 2.2.6.4 because of possible DOS Vulnerability in Multipart MIME parsing chef-server-ctl [#3733](https://github.com/chef/chef-server/pull/3733) ([talktovikas](https://github.com/talktovikas))
 <!-- latest_release -->
 
 <!-- release_rollup since=15.8.0 -->
 ### Changes since 15.8.0 release
 
 #### Merged Pull Requests
+- Update rack version from 2.2.6.2 -&gt; 2.2.6.4 because of possible DOS Vulnerability in Multipart MIME parsing chef-server-ctl [#3733](https://github.com/chef/chef-server/pull/3733) ([talktovikas](https://github.com/talktovikas)) <!-- 15.9.1 -->
 - added knife to omnibus dependency list. [#3739](https://github.com/chef/chef-server/pull/3739) ([sreepuramsudheer](https://github.com/sreepuramsudheer)) <!-- 15.9.0 -->
 - Fix verify pipeline: The repository... does not have a Release file. [#3740](https://github.com/chef/chef-server/pull/3740) ([lbakerchef](https://github.com/lbakerchef)) <!-- 15.8.2 -->
 - Fixes redis-lb logrotate file creation ownership [#3697](https://github.com/chef/chef-server/pull/3697) ([fretb](https://github.com/fretb)) <!-- 15.8.1 -->

VERSION

@@ -1 +1 @@
-15.9.0
+15.9.1