Changelog

Unreleased

• Add the :azure-blob konserve backend.
• Support Azure Identity, connection strings, explicit credentials, and injected service clients.
• Add ETag/If-Match optimistic locking with HTTP 412 conflict handling.
• Add local and CircleCI integration tests against Azurite 3.36.0.
• Align git-derived versions and GitHub releases with the konserve cloud adapters.