Add endpoint config for Amazon Aurora DSQL

[kakakakakku]

Hi😀

LocalStack for AWS 2026.06.0 added support for Amazon Aurora DSQL.
https://blog.localstack.cloud/localstack-for-aws-release-2026-06-0/

This PR adds the dsql service to the endpoint configuration so that it can be used through localstack_client.
The changes follow the same pattern as a recent PR.

• Add S3 tables to list of supported services #58

I also verified the change locally and it works good.

import localstack_client.session as session

try:
    dsql = session.Session().client('dsql')
except Exception as e:
    print(f"client('dsql') -> {e}")
    raise SystemExit(1)

print(f"client('dsql') -> endpoint: {dsql.meta.endpoint_url}")

$ PYTHONPATH=~/ghq/github.com/kakakakakku/localstack-python-client uv run main.py
client('dsql') -> endpoint: http://localhost:4566

Thank you!

[kakakakakku]

@HarshCasper
Thank you for the approval and for triggering the GitHub Actions runs😀

All the CI jobs are currently failing, but this seems to be caused by the LocalStack CI license rather than my changes. The test fixture fails at localstack start -d with:

❌ Error: 
===============================================
License activation failed! 🔑❌

Is there anything I should do on my side?

[skyrpex]

@kakakakakku hey 👋🏻 I reviewed and tested the changes: everything works perfectly fine. Nothing for you to do at all, will merge soon.

Thank you!

[kakakakakku]

Thank you so much!

[skyrpex]

Thank you so much!

🚀 2.12 published https://pypi.org/project/localstack-client/2.12/