docs(database): document transaction callback interface break

Signed-off-by: memleakd <121398829+memleakd@users.noreply.github.com>

Author: memleakd

user_guide_src/source/changelogs/v4.8.0.rst

@@ -45,6 +45,7 @@ update your implementations to include the new methods or method changes to ensu
 
 - **Logging:** ``CodeIgniter\Log\Handlers\HandlerInterface::handle()`` now requires a third parameter ``array $context = []``. Any custom log handler that overrides ``handle()`` - whether implementing ``HandlerInterface`` directly or extending a built-in handler class - must add the parameter to its ``handle()`` method signature.
 - **Security:** The ``SecurityInterface``'s ``verify()`` method now has a native return type of ``static``.
+- **Database:** ``CodeIgniter\Database\ConnectionInterface`` now requires the ``afterCommit()`` and ``afterRollback()`` methods.
 
 Method Signature Changes
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