Revert distroless-iptables from v0.6.1 to v0.5.6

This commit will revert the distroless-iptables version from v0.6.1(built on go1.23rc2) to v0.5.6(built on go1.22.5).

Signed-off-by: ArkaSaha30 <[email protected]>

Author: ArkaSaha30

test/utils/image/manifest.go

@@ -229,7 +229,7 @@ func initImageConfigs(list RegistryList) (map[ImageID]Config, map[ImageID]Config
 	configs[BusyBox] = Config{list.PromoterE2eRegistry, "busybox", "1.36.1-1"}
 	configs[CudaVectorAdd] = Config{list.PromoterE2eRegistry, "cuda-vector-add", "1.0"}
 	configs[CudaVectorAdd2] = Config{list.PromoterE2eRegistry, "cuda-vector-add", "2.3"}
-	configs[DistrolessIptables] = Config{list.BuildImageRegistry, "distroless-iptables", "v0.6.1"}
+	configs[DistrolessIptables] = Config{list.BuildImageRegistry, "distroless-iptables", "v0.5.6"}
 	configs[Etcd] = Config{list.GcEtcdRegistry, "etcd", "3.5.15-0"}
 	configs[Httpd] = Config{list.PromoterE2eRegistry, "httpd", "2.4.38-4"}
 	configs[HttpdNew] = Config{list.PromoterE2eRegistry, "httpd", "2.4.39-4"}