Update CHANGELOG.md to reflect the promotion of 3.12.6

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

CHANGELOG.md

@@ -1,24 +1,21 @@
-<!-- latest_release 3.12.6 -->
-## [v3.12.6](https://github.com/inspec/train/tree/v3.12.6) (2024-07-16)
-
-#### Merged Pull Requests
-- Revert &quot;CHEF-13189: Remove ruby 3.0 support&quot; [#783](https://github.com/inspec/train/pull/783) ([Vasu1105](https://github.com/Vasu1105))
+<!-- latest_release -->
 <!-- latest_release -->
 
-<!-- release_rollup since=3.12.5 -->
-### Changes not yet released to rubygems.org
-
-#### Merged Pull Requests
-- Revert &quot;CHEF-13189: Remove ruby 3.0 support&quot; [#783](https://github.com/inspec/train/pull/783) ([Vasu1105](https://github.com/Vasu1105)) <!-- 3.12.6 -->
+<!-- release_rollup -->
 <!-- release_rollup -->
 
 <!-- latest_stable_release -->
+## [v3.12.6](https://github.com/inspec/train/tree/v3.12.6) (2024-07-17)
+
+#### Merged Pull Requests
+- Revert &quot;CHEF-13189: Remove ruby 3.0 support&quot; [#783](https://github.com/inspec/train/pull/783) ([Vasu1105](https://github.com/Vasu1105))
+<!-- latest_stable_release -->
+
 ## [v3.12.5](https://github.com/inspec/train/tree/v3.12.5) (2024-07-02)
 
 #### Merged Pull Requests
 - CHEF-13189: Remove ruby 3.0 support [#781](https://github.com/inspec/train/pull/781) ([Vasu1105](https://github.com/Vasu1105))
 - Close SSH channels on close event [#780](https://github.com/inspec/train/pull/780) ([thheinen](https://github.com/thheinen))
-<!-- latest_stable_release -->
 
 ## [v3.12.3](https://github.com/inspec/train/tree/v3.12.3) (2024-04-16)