Changed dependency management to poetry

app/database.py

@@ -4,18 +4,16 @@ from sqlalchemy.orm import sessionmaker
 
 from .const import SQLALCHEMY_DATABASE_URL
 
-
-engine = create_engine(
-    SQLALCHEMY_DATABASE_URL
-)
+engine = create_engine(SQLALCHEMY_DATABASE_URL)
 
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 
 Base = declarative_base()
 
+
 def get_db():
     db = SessionLocal()
     try:
         yield db
     finally:
-        db.close()
+        db.close()