GHSA-m3c6-2p7h-cfr3: KubeEdge: ConfigUpdateJob updateFields enables remote shell injection and code execution on edge nodes

## Description KubeEdge ConfigUpdateJob processing was vulnerable to command injection on edge nodes. The `updateFields` values from a ConfigUpdateJob were concatenated into a command string and executed through a system shell. An authenticated user with sufficient permissions to create or update ConfigUpdateJob resources could include shell metacharacters in the supplied configuration fields and cause unintended commands to be executed on targeted edge nodes. …