Update nerdctl version to 0.8.1 (#7617)

roles/download/defaults/main.yml

@@ -84,7 +84,7 @@ multus_version: "v3.7"
 ovn4nfv_ovn_image_version: "v1.0.0"
 ovn4nfv_k8s_plugin_image_version: "v1.1.0"
 helm_version: "v3.5.4"
-nerdctl_version: "0.8.0"
+nerdctl_version: "0.8.1"
 krew_version: "v0.4.1"
 
 # Get kubernetes major version (i.e. 1.17.4 => 1.17)
@@ -402,11 +402,11 @@ kata_containers_binary_checksums:
 
 nerdctl_archive_checksums:
   arm:
-    0.8.0: 4f010fad22de10c839c003f126e9a10971abd142a9666bd1d3f2f49a3b545b5a
+    0.8.1: 27bdad3f9e2667620f70617c48d595c5c4e24a10fbcd00d31202cd8d571c9233
   arm64:
-    0.8.0: 55073069e72315b58b4ebedb49c48f7d762cae02c541cbb36693223ae4019a6b
+    0.8.1: b0c35d80da92eaf5ee61873f0d9d6d6ba01d109b62143a31e3c306b2d53a2895
   amd64:
-    0.8.0: a8097ad1f302c4ee2643162569a8f7019190461e740e453f41dba3ba264d0d3d
+    0.8.1: 7c3573db282749079e06f4c592b4585d53628d13fd762746b30389f854d79a47
 
 etcd_binary_checksum: "{{ etcd_binary_checksums[image_arch] }}"
 cni_binary_checksum: "{{ cni_binary_checksums[image_arch] }}"