Fix devcontainer config

Author: scheibling

.devcontainer/devcontainer.json

@@ -1,6 +1,6 @@
 {
   "name": "SSHKey Tools Devcontainer",
-  "image": "mcr.microsoft.com/devcontainers/python:0-3.11-bullseye",
+  "image": "mcr.microsoft.com/devcontainers/python:3-3",
   "features": {
     "ghcr.io/devcontainers-contrib/features/coverage-py:2": {}
   },
@@ -10,8 +10,8 @@
             "scheiblingco.code-pypack",
             "scheiblingco.scheiblingco-default"
         ]
-    },
+    }
   },
   "onCreateCommand": "curl https://pyenv.run | bash",
   "postStartCommand": "pyenv init"
-}
+}