[BUG] AttributeError: module 'signal' has no attribute 'SIGALRM' on Windows machine

[devaskim]

Describe the bug
Cannot run unit tests because of compilation error:

Error
Traceback (most recent call last):
  File "C:\Users\Admin\code\tb\thingsboard-gateway\tests\unit\service\test_duplicate_detector.py", line 96, in setUp
    super().setUp()
  File "C:\Users\Admin\code\tb\thingsboard-gateway\tests\unit\BaseUnitTest.py", line 11, in setUp
    super().setUp()
  File "C:\Users\Admin\code\tb\thingsboard-gateway\tests\base_test.py", line 33, in setUp
    signal.signal(signal.SIGALRM, self._timeout_handler)
                  ^^^^^^^^^^^^^^
AttributeError: module 'signal' has no attribute 'SIGALRM'