Update CHANGELOG.md to reflect the promotion of 3.15.0

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

Author: chef-ci

CHANGELOG.md

@@ -1,26 +1,23 @@
 # Mixlib::Install Changes
 
-<!-- latest_release 3.15.0 -->
-## [v3.15.0](https://github.com/chef/mixlib-install/tree/v3.15.0) (2026-01-20)
-
-#### Merged Pull Requests
-- CHEF-29672 Add license_id parameter to install script endpoint [#416](https://github.com/chef/mixlib-install/pull/416) ([Stromweld](https://github.com/Stromweld))
 <!-- latest_release -->
-<!-- release_rollup since=3.14.0 -->
-### Changes not yet released to rubygems.org
-
-#### Merged Pull Requests
-- CHEF-29672 Add license_id parameter to install script endpoint [#416](https://github.com/chef/mixlib-install/pull/416) ([Stromweld](https://github.com/Stromweld)) <!-- 3.15.0 -->
+<!-- latest_release -->
+<!-- release_rollup -->
 <!-- release_rollup -->
 
 <!-- latest_stable_release -->
+## [v3.15.0](https://github.com/chef/mixlib-install/tree/v3.15.0) (2026-01-21)
+
+#### Merged Pull Requests
+- CHEF-29672 Add license_id parameter to install script endpoint [#416](https://github.com/chef/mixlib-install/pull/416) ([Stromweld](https://github.com/Stromweld))
+<!-- latest_stable_release -->
+
 ## [v3.14.0](https://github.com/chef/mixlib-install/tree/v3.14.0) (2026-01-14)
 
 #### Merged Pull Requests
 - Now that tests are in GHA, drop buildkite [#411](https://github.com/chef/mixlib-install/pull/411) ([jaymzh](https://github.com/jaymzh))
 - Add `list-products` subcommand [#413](https://github.com/chef/mixlib-install/pull/413) ([jaymzh](https://github.com/jaymzh))
 - add commercial api support [#408](https://github.com/chef/mixlib-install/pull/408) ([Stromweld](https://github.com/Stromweld))
-<!-- latest_stable_release -->
 
 ## [v3.13.0](https://github.com/chef/mixlib-install/tree/v3.13.0) (2026-01-07)