Update .devcontainer/post-attach.sh

Co-authored-by: Copilot <[email protected]>

Author: kevinbackhouse

.devcontainer/post-attach.sh

@@ -8,7 +8,7 @@ if [ -v CODESPACES ]; then
         echo "Running in Codespaces - please add COPILOT_TOKEN to your Codespaces secrets"
     fi
     if [ ! -v GITHUB_PERSONAL_ACCESS_TOKEN ]; then
-        echo "Running in Codespaces - please add GITHUB_PERSONAL_ACCESS_TOKEN to your Codespaces secrets"
+        echo "⚠️ Running in Codespaces - please add GITHUB_PERSONAL_ACCESS_TOKEN to your Codespaces secrets"
     fi
 fi