agent-v0.6.7

creates a new instance of the plural deployment operator

What's Changed

• add gotestsum for unit tests by @zreigz in #557
• feat(agent): refactor MCP server and improve agent harness by @floreks in #556
• feat: implement sentinel run job poller by @zreigz in #545
• fix: Increase cache sync timeouts by @maciaszczykm in #558
• Release v0.6.7 by @github-actions[bot] in #559

Full Changelog: agent-v0.6.6...agent-v0.6.7