Merge pending branch with Go 1.21 updates

- Resolve merge conflicts in go.mod, go.sum, and README.md
- Keep Go 1.21 requirement and latest security updates
- Add version 1.3.9 with CircleCI fixes

Update dependencies to address security vulnerabilities

Add SQL Server support for the Locker interface

x/net update

Release 1.3.5

Merge pull request #23 from adlio/version-update

README update for v1.3.4

Security updates. Change CI to CircleCI.

Merge branch 'runc-112'

* runc-112:
  Updates to ory/dockertest/v3

Security updates to ory/dockertest dependency (runc)

Basic SQL Server Support

This release adds initial support for SQL Server
databases, without the Locker interface which
prevents simultaneous execution on multiple
database clients.