chore: Remove binding of ports to IPv4 only (#1363)

Author: daviian

src/Testcontainers/Clients/ContainerConfigurationConverter.cs

@@ -148,9 +148,8 @@ public ToPortBindings()
 
       public override IEnumerable<KeyValuePair<string, IList<PortBinding>>> Convert([CanBeNull] IEnumerable<KeyValuePair<string, string>> source)
       {
-        // https://github.com/moby/moby/pull/41805#issuecomment-893349240.
         return source?.Select(portBinding => new KeyValuePair<string, IList<PortBinding>>(
-          GetQualifiedPort(portBinding.Key), new[] { new PortBinding { HostIP = IPAddress.Any.ToString(), HostPort = portBinding.Value } }));
+          GetQualifiedPort(portBinding.Key), new[] { new PortBinding { HostPort = portBinding.Value } }));
       }
     }
   }