prepare new release

Author: adorton-adobe

.changelog/changelog.md

@@ -1,3 +1,42 @@
+| tag    | date       | title                 |
+|--------|------------|-----------------------|
+| v2.9.0 | 2023-07-26 | User Sync Tool v2.9.0 |
+
+# Features
+
+* 8c4ea5c Implement username update (disabled by default - see #819)
+* #819 Add `update_attributes` config to govern which user attributes can be updated
+  * `username` disabled by default, all others enabled
+  * Generates warning message when a disabled attribute is different (assuming `--update-user-info` is enabled)
+* [OAuth Server-to-Server Support](https://developer.adobe.com/developer-console/docs/guides/authentication/ServerToServerAuthentication/implementation/)
+  * New config option in UMAPI connector config and Admin Console connector:
+    `authentication_method`
+  * Set to `oauth` to enable Server-to-Server support
+  * Server-to-Server auth only requires Client ID and Client Secret
+  * JWT authentication is deprecated and will be removed in a future version
+  * More information
+    * https://github.com/adobe-apiplatform/user-sync.py/blob/user-guide-wip/en/user-manual/connect_adobe.md
+    * https://github.com/adobe-apiplatform/user-sync.py/blob/user-guide-wip/en/user-manual/sync_from_console.md
+
+# Fixes
+
+* #811 Fix user email update failures
+
+# Build Changes
+
+* Github Actions no longer maintains a build for Ubuntu Bionic (18.04),
+  so automated `bionic` builds are no longer available. Automated builds
+  for 22.04 Jammy have been added with the `jammy` label.
+
+# Advisory
+
+This is a pre-release and may not be stable for production use. The username
+update feature is under development and will currently update the username of
+any user that can be identified as being in need of a username update. This
+may have unexpected side effects.
+
+---
+
 | tag       | date       | title                    |
 |-----------|------------|--------------------------|
 | v2.9.0rc3 | 2023-07-12 | User Sync Tool v2.9.0rc3 |

user_sync/version.py

@@ -18,4 +18,4 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-__version__ = '2.9.0rc3'
+__version__ = '2.9.0'