update devcontainer

Author: Niko Matsakis

.devcontainer/devcontainer.json

@@ -6,7 +6,9 @@
 	"image": "mcr.microsoft.com/devcontainers/rust:1-1-bullseye",
 	"features": {
 		"ghcr.io/eitsupi/devcontainer-features/mdbook:1": {},
-		"ghcr.io/guiyomh/features/just:0": {}
+		"ghcr.io/guiyomh/features/just:0": {},
+		"ghcr.io/devcontainers/features/aws-cli:1": {},
+		"ghcr.io/devcontainers/features/github-cli:1": {}
 	}
 
 	// Use 'mounts' to make the cargo cache persistent in a Docker Volume.