Changelog for v5.10.0 (#817)

This is an automated changelog update for v5.10.0

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Co-authored-by: Warren Gifford <[email protected]>

Author: sourcegraph-bot-devx

docs/admin/updates/automatic.mdx

@@ -1,5 +1,7 @@
 # Automatic multi-version upgrades
 
+> Warning: Automatic upgrades in v5.10.0 will fail unless the postgres database is upgraded from postgres 12 to postgres 16. Or the environment variable `SRC_AUTOUPGRADE_IGNORE_DRIFT=true` is set on the `sourcegraph-frontend` container. 
+
 From **Sourcegraph 5.1 and later**, multi-version upgrades can be performed **automatically** as if they were a standard upgrade for the same deployment type. Automatic multi-version upgrades take the following general form:
 
 1. Determine if your instance is ready to Upgrade: