Codebase Refactor: Remove shell=True from subprocess calls

[arav-agarwal2]

In general, using shell=True can lead to security issues. It's best to remove these calls when possible.

Using Ruff rule S602:

compliance/TEST01/run_verification.py:124:17: S602 subprocess call with shell=True identified, security issue
compliance/TEST01/run_verification.py:165:17: S602 subprocess call with shell=True identified, security issue
compliance/TEST04/run_verification.py:77:17: S602 subprocess call with shell=True identified, security issue
compliance/TEST07/run_verification.py:194:17: S602 subprocess call with shell=True identified, security issue
language/bert/accuracy-squad.py:524:32: S602 subprocess call with shell=True identified, security issue
language/bert/run.py:210:40: S602 subprocess call with shell=True identified, security issue
loadgen/version_generator.py:57:91: S602 subprocess call with shell=True identified, security issue
retired_benchmarks/speech_recognition/rnnt/run.py:120:36: S602 subprocess call with shell=True identified, security issue
retired_benchmarks/translation/gnmt/tensorflow/nmt/utils/evaluation_utils.py:165:45: S602 subprocess call with shell=True identified, security issue
retired_benchmarks/translation/gnmt/tensorflow/nmt/utils/evaluation_utils.py:166:67: S602 subprocess call with shell=True identified, security issue
retired_benchmarks/translation/gnmt/tensorflow/nmt/utils/evaluation_utils.py:180:48: S602 subprocess call with shell=True identified, security issue
retired_benchmarks/translation/gnmt/tensorflow/run_task.py:131:36: S602 subprocess call with shell=True identified, security issue
retired_benchmarks/vision/medical_imaging/3d-unet-brats19/run.py:138:36: S602 subprocess call with shell=True identified, security issue
vision/medical_imaging/3d-unet-kits19/run.py:185:36: S602 subprocess call with shell=True identified, security issue
Found 14 errors.