replace table_schema by schema_name

[rmaxu]

Description

SVV_ALL_TABLES does not have table_schema column (https://docs.aws.amazon.com/redshift/latest/dg/r_SVV_ALL_TABLES.html)

Motivation and Context

Testing

Screenshots (if appropriate)

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)

Checklist

• [ ] Local run of ./build.sh succeeds
• [ ] Code changes have been run against the repository's pre-commit hooks
• [ ] Commit messages follow Conventional Commit Specification
• [ ] I have read the README document
• [ ] I have added tests to cover my changes
• [ ] I have run all unit tests using pytest test/unit and they are passing.
  • By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.