chore: default to containerd 1.7 for AL2, and 2.0 for AL2023 on 1.34+ (#2380)

Author: wwvela

templates/al2/variables-1.21.json

@@ -13,7 +13,7 @@
     "binary_bucket_region": "us-west-2",
     "cache_container_images": "false",
     "cni_plugin_version": "v1.2.0",
-    "containerd_version": "1.7.27",
+    "containerd_version": "1.7.*",
     "install_containerd_from_s3": "false",
     "creator": "{{env `USER`}}",
     "docker_version": "none",

templates/al2/variables-1.22.json

@@ -1,4 +1,4 @@
 {
     "source_ami_filter_name": "al2023-ami-minimal-2023.*-kernel-6.1-*",
-    "containerd_version": "1.7.27"
+    "containerd_version": "1.7.*"
 }

templates/al2/variables-1.23.json

@@ -1,4 +1,4 @@
 {
     "source_ami_filter_name": "al2023-ami-minimal-2023.*-kernel-6.1-*",
-    "containerd_version": "1.7.27"
+    "containerd_version": "1.7.*"
 }