Podman v6.0.0

Podman v6.0.0 has been released with major improvements including modernized networking infrastructure (transitioning to Netavark, Pasta, and nftables), enhanced podman machine capabilities for multi-provider VM support, a significant Quadlet overhaul with REST API support, and improved Docker compatibility. The release represents months of work to modernize the project's core infrastructure, enhance security, and improve user experience across container management.