container: T5867: pin specific podman version

As of Debian version 4.9.5+ds1-1 podman increased the dependency on
libc6 and libgpgme11t64.

  podman : Depends: libc6 (>= 2.38) but 2.36-9+deb12u7 is to be installed
           Depends: libgpgme11t64 (>= 1.4.1) but it is not going to be installed

Pin the version to a prior one that requires the old libc.

(cherry picked from commit 0094dc2)

data/live-build-config/archives/trixie.pref.chroot

@@ -1,5 +1,5 @@
 Package: podman
-Pin: release n=trixie
+Pin: version 4.9.4*
 Pin-Priority: 900
 
 Package: netavark