Set go version in dev container to normal minor version and update clab

See merge request !565

Co-authored-by: Neil-Jocelyn Schark <--global>

.devcontainer/devcontainer.json

@@ -5,7 +5,7 @@
         "build": {
             "dockerfile": "Dockerfile",
             "args": {
-                "_CLAB_VERSION": "0.46.1"
+                "_CLAB_VERSION": "0.46.2"
             }
         },
         "features": {
@@ -15,7 +15,7 @@
                 "version": "latest"
             },
             "ghcr.io/devcontainers/features/go:1": {
-                    "version": "1.21.1"
+                    "version": "1.21"
                 }
         },
         // add any required extensions that must be pre-installed in the devcontainer