Bundle Required Python Dependencies in Offline Upgrade and Patch Packages

NetBrain upgrade and patch packages do not currently include all required Python dependencies, such as paramiko, for offline installation environments. When a required package is missing from the offline package set, administrators cannot install it through the standard offline pip command, causing plugin or feature functionality that depends on it to fail. This enhancement would ensure that all Python dependencies required by NetBrain plugins and features are pre-packaged and validated as part of the upgrade or patch distribution, removing the need for manual dependency installation in offline or restricted environments. This would reduce failed installations and support cases for customers operating in air-gapped or offline server environments.