chore(dev): update dependency alembic to v1.18.3

Author: renovate[bot]

poetry.lock

@@ -8,7 +8,7 @@ authors = [
 license = "BSD-3-Clause"
 requires-python = ">=3.13,<3.14"
 dependencies = [
-  'alembic ==1.16.5',
+  'alembic ==1.18.3',
   'attrs ==25.3.0',
   'beautifulsoup4 ==4.14.2',
   'botus_receptus[uvloop,sqlalchemy] @ git+https://github.com/bryanforbes/[email protected]',