Request for Podman 5 backport to Debian 12 (Bookworm)

Dear Debian Backports maintainers,

Bonjour,

I am writing to request the backporting of Podman 5 to Debian 12 
(Bookworm) backports.

Current situation:
- Debian 12 (Bookworm): Podman 4.3.1
- Debian Trixie (Testing): Podman 5.2.2
- Podman 5 not available in bookworm-backports

Rationale:
Podman 5 offers significant improvements that would benefit Debian 
stable users:

1. Enhanced rootless container support
2. Pasta: improved networking capabilities and performance enhancements
3. Better Docker Compose compatibility

As an example, with Podman 4.x, even if you pass CAP_NET_RAW capability 
to the container, slirp4netns will forcibly translate the container’s 
ICMP packets to UDP; the only workaround is to adjust to 
`ping_group_range` to a large range. Similarly, some capabilities like 
CAP_PERFMON are not correctly passed to the containers (that’s an 
issue in frigate containers to access the iGPU for image detection). 
These issues are known to be solved in Podman 5.

As many, I regularly work with containers, and I find these features 
extremely useful for development and deployment in small production 
environments. I guess other users in similar roles would benefit from 
access to Podman 5 while maintaining Debian 12's stability.

I’m happy to assist with testing or provide additional information if 
needed.

Thanks in advance,
Warm regards,

Romain

PS: pinning Podman to 5.2 from trixie would pull too many changes, such 
as an upgraded libc6.