superset: superset db upgrade not working due to removal of FLAGS variable in sqlparse/kewords.py

In superset/sql_parse.py sqlparse.keywords.FLAGS is used. However, sqlparse has removed the FLAGS variable from the code sqlparse/kewords.py. This leads to an AttributeError when running the CLI command $ superset db upgrade AttributeError: module 'sqlparse.keywords' has no attribute 'FLAGS' I would recommend replacing the FLAGS dependency with the actual value re.IGNORECASE | re.UNICODE).match or fix the sqlparse version to “sqlparse==0.4.3” (not recommended as they fixed a security problem recently).

I have experienced this problem under python3.9 and python3.11