docs(release): Update updating-datahub.md for 0.10.5 release (#8557)

Co-authored-by: david-leifker <[email protected]>

docs/how/updating-datahub.md

@@ -6,6 +6,16 @@ This file documents any backwards-incompatible changes in DataHub and assists pe
 
 ### Breaking Changes
 
+### Potential Downtime
+
+### Deprecations
+
+### Other notable Changes
+
+## 0.10.5
+
+### Breaking Changes
+
 - #8201: Python SDK: In the DataFlow class, the `cluster` argument is deprecated in favor of `env`.
 - #8263: Okta source config option `okta_profile_to_username_attr` default changed from `login` to `email`.
   This determines which Okta profile attribute is used for the corresponding DataHub user
@@ -19,6 +29,10 @@ individually enable / disable desired field metrics.
 
 ### Potential Downtime
 
+- BrowsePathsV2 upgrade will now be handled by the `system-update` job in non-blocking mode. This process generates data needed for the new search
+  and browse feature. This process must complete before enabling the new search and browse UI and while upgrading entities will be missing from the UI.
+  If not using the new search and browse UI, there will be no impact and the update will complete in the background.
+
 ### Deprecations
 
 - #8198: In the Python SDK, the `PlatformKey` class has been renamed to `ContainerKey`.