Add makemigrations --check to tox.ini for PostgreSQL and MySQL

Co-authored-by: marianoeramirez <1028773+marianoeramirez@users.noreply.github.com>

Author: Copilot

tox.ini

@@ -52,6 +52,8 @@ usedevelop = true
 commands =
     mysql: mysql -u root -h {env:DB_HOST} --password={env:DB_PASSWORD} --protocol tcp -e 'drop database if exists test_cities_light_test;'
     postgresql: psql -U postgres -h {env:DB_HOST}  -c 'drop database if exists test_cities_light_test;'
+    postgresql: python test_project/manage.py makemigrations --check --dry-run
+    mysql: python test_project/manage.py makemigrations --check --dry-run
     pytest -v --cov cities_light --create-db --strict -r fEsxXw {posargs:src}
 allowlist_externals =
     mysql