Fix pylint E0401

[eljonny]

src\static_analysis_cpp.py:7:0: E0401: Unable to import 'src' (import-error)
src\static_analysis_python.py:5:0: E0401: Unable to import 'src' (import-error)
test\test_get_files_to_check.py:13:0: E0401: Unable to import 'src' (import-error)
test\test_join_sarif.py:19:0: E0401: Unable to import 'src' (import-error)
test\test_sa_utils.py:31:12: E0401: Unable to import 'src' (import-error)
test\test_static_analysis_cpp.py:32:12: E0401: Unable to import 'src' (import-error)
test\test_static_analysis_cpp.py:76:12: E0401: Unable to import 'src' (import-error)
test\test_static_analysis_cpp.py:91:12: E0401: Unable to import 'src' (import-error)
test\test_static_analysis_cpp.py:114:12: E0401: Unable to import 'src' (import-error)
test\test_static_analysis_cpp.py:137:12: E0401: Unable to import 'src' (import-error)
test\test_static_analysis_cpp.py:159:12: E0401: Unable to import 'src' (import-error)
test\test_static_analysis_python.py:33:12: E0401: Unable to import 'src' (import-error)