Question mark in COMMENT is not handled

**Describe the bug**
Question mark in COMMENT is not handled

**To Reproduce**
ddl = """
CREATE EXTERNAL TABLE `test` (
    job_id STRING COMMENT 'test?'
)
STORED AS PARQUET LOCATION 'hdfs://test'
"""
from simple_ddl_parser import DDLParser
parse_results = DDLParser(ddl).run(output_mode="hql")

**Expected behavior**
Response should not be empty.
