Pin to major version of bash-config feature (#227)

Author: coretl

.devcontainer/devcontainer.json

@@ -29,7 +29,7 @@
     },
     "features": {
         // add in eternal history and other bash features
-        "ghcr.io/diamondlightsource/devcontainer-features/bash-config:1.0.0": {}
+        "ghcr.io/diamondlightsource/devcontainer-features/bash-config:1": {}
     },
     // Create the config folder for the bash-config feature
     "initializeCommand": "mkdir -p ${localEnv:HOME}/.config/bash-config",