Merge pull request #3706 from open-webui/dependabot/pip/backend/dev/alembic-1.13.2

chore(deps): bump alembic from 1.13.1 to 1.13.2 in /backend

backend/requirements.txt

@@ -13,7 +13,7 @@ passlib[bcrypt]==1.7.4
 requests==2.32.3
 aiohttp==3.9.5
 sqlalchemy==2.0.30
-alembic==1.13.1
+alembic==1.13.2
 peewee==3.17.5
 peewee-migrate==1.12.2
 psycopg2-binary==2.9.9