NOBUG: Add upgrade notes

UPGRADING.md

@@ -20,6 +20,17 @@ The format of this change log follows the advice given at [Keep a CHANGELOG](htt
 - Added a new optional param to adhoc_task_failed and scheduled_task_failed to allow skipping log finalisation when called from a separate task.
 
   For more information see [MDL-84442](https://tracker.moodle.org/browse/MDL-84442)
+- There is a new `core/page_title` Javascript module for manipulating the current page title
+
+  For more information see [MDL-84804](https://tracker.moodle.org/browse/MDL-84804)
+
+### core_auth
+
+#### Added
+
+- A new method called `get_additional_upgrade_token_parameters` has been added to `oauth2_client` class. This will allow custom clients to override this one and add their extra parameters for upgrade token request.
+
+  For more information see [MDL-80380](https://tracker.moodle.org/browse/MDL-80380)
 
 ### core_user
 

auth/UPGRADING.md

@@ -0,0 +1,10 @@
+# core_auth (subsystem / plugintype) Upgrade notes
+
+## 4.5.4+
+
+### Added
+
+- A new method called `get_additional_upgrade_token_parameters` has been added to `oauth2_client` class. This will allow custom clients to override this one and add their extra parameters for upgrade token request.
+
+  For more information see [MDL-80380](https://tracker.moodle.org/browse/MDL-80380)
+

lib/UPGRADING.md

@@ -12,6 +12,9 @@
 - Added a new optional param to adhoc_task_failed and scheduled_task_failed to allow skipping log finalisation when called from a separate task.
 
   For more information see [MDL-84442](https://tracker.moodle.org/browse/MDL-84442)
+- There is a new `core/page_title` Javascript module for manipulating the current page title
+
+  For more information see [MDL-84804](https://tracker.moodle.org/browse/MDL-84804)
 
 ## 4.5.4