change depends_on and tasks data type to not limit the size

Author: andrii-i

jupyter_scheduler/orm.py

@@ -103,7 +103,7 @@ class Job(CommonColumns, Base):
     url = Column(String(256), default=generate_jobs_url)
     pid = Column(Integer)
     idempotency_token = Column(String(256))
-    depends_on = Column(JsonType(1024))
+    depends_on = Column(JsonType)
     workflow_id = Column(String(36))
     # All new columns added to this table must be nullable to ensure compatibility during database migrations.
     # Any default values specified for new columns will be ignored during the migration process.
@@ -113,7 +113,7 @@ class Workflow(Base):
     __tablename__ = "workflows"
     __table_args__ = {"extend_existing": True}
     workflow_id = Column(String(36), primary_key=True, default=generate_uuid)
-    tasks = Column(JsonType(1024))
+    tasks = Column(JsonType)
     status = Column(String(64), default=Status.CREATED)
     # All new columns added to this table must be nullable to ensure compatibility during database migrations.
     # Any default values specified for new columns will be ignored during the migration process.