Rotate UPGRADING.md for Graylog 6.3 (#22425)

Author: bernd

UPGRADING.md

@@ -1,14 +1,9 @@
-Upgrading to Graylog 6.2.x
+Upgrading to Graylog 6.3.x
 ==========================
 
 ## Breaking Changes
 
-### Plugins
-* This release includes Java API changes which might require plugin authors to adjust their code. Please check
-  [Java API Changes](#java-api-changes) for details.
-* Adjustment of `enterpriseWidgets` web interface plugin. The `editComponent` attribute now no longer has a `onSubmit` prop.
-  Before this change the prop had to be called to close the widget edit mode. Now it is enough to call `applyAllWidgetChanges` from the `WidgetEditApplyAllChangesContext`.
-  Alternatively the `SaveOrCancelButtons` component can be used in the edit component for custom widgets. It renders a cancel and submit button and calls `applyAllWidgetChanges` on submit.
+- tbd
 
 ## Configuration File Changes
 
@@ -22,38 +17,12 @@ Upgrading to Graylog 6.2.x
 
 ## Java API Changes
 
-Upgraded [MongoJack](https://github.com/mongojack/mongojack) to version 5.x. This impacts the Java API for accessing
-documents in MongoDB. Some previously deprecated MongoJack classes (like `org.mongojack.DBQuery`) have been removed.
-Plugin authors will have to replace usages of removed classes to corresponding classes from the MongoDB driver
-packages, most prominently `com.mongodb.client.model.Filters`.
-
-Additionally, the following Java Code API changes are included in this release:
-
-| File/method                                                                       | Description                              |
-|-----------------------------------------------------------------------------------|------------------------------------------|
-| `org.graylog.scheduler.JobSchedule#toDBUpdate`                                    | removed                                  |
-| `org.graylog.scheduler.DBJobTriggerService#all`                                   | replaced by streamAll                    |
-| `org.graylog.scheduler.DBJobTriggerService#getAllForJob`                          | replaced by streamAllForJob              |
-| `org.graylog.scheduler.DBJobTriggerService#findByQuery`                           | replaced by streamByQuery                |
-| `org.graylog.events.processor.DBEventDefinitionService#getByNotificationId`       | replaced by streamByNotificationId       |
-| `org.graylog.events.processor.DBEventDefinitionService#getSystemEventDefinitions` | replaced by streamSystemEventDefinitions |
-| `org.graylog.events.processor.DBEventDefinitionService#getByArrayValue`           | replaced by streamByArrayValue           |
-| `org.graylog2.lookup.db.DBCacheService#findByIds`                                 | replaced by streamByIds                  |
-| `org.graylog2.lookup.db.DBCacheService#findAll`                                   | replaced by streamAll                    |
-| `org.graylog2.lookup.db.DBDataAdapterService#findByIds`                           | replaced by streamByIds                  |
-| `org.graylog2.lookup.db.DBDataAdapterService#findAll`                             | replaced by streamAll                    |
-| `org.graylog2.lookup.db.DBLookupTableService#findByCacheIds`                      | replaced by streamByCacheIds             |
-| `org.graylog2.lookup.db.DBLookupTableService#findByDataAdapterIds`                | replaced by streamByDataAdapterIds       |
-| `org.graylog2.lookup.db.DBLookupTableService#findAll`                             | replaced by streamAll                    |
-
-DBService classes' new streaming methods require streams to be closed after using - recommend using try-with-resource statements.
+- tbd
 
 ## REST API Endpoint Changes
 
 The following REST API changes have been made.
 
 | Endpoint                                                              | Description                                                                             |
 |-----------------------------------------------------------------------|-----------------------------------------------------------------------------------------|
-| `GET /plugins/org.graylog.integrations/aws/inputs/available_services` | Remove unused endpoint.                                                                 |
-| `GET /plugins/org.graylog.integrations/aws/inputs/permissions`        | Removed permissions endpoint in favor of maintaining permissions in official docs site. |
-| `/plugins/org.graylog.plugins.files/*`                                | Removed (Graylog Enterprise plugin).                                                    |
+| `GET /<endpoint>`                                                     | description                                                                             |