Adjusted testscript code for latest Selenium version

[alexanderroidl]

Selenium changelog:

Selenium 4.3.0
* Deprecated find_element_by_* and find_elements_by_* are now removed (#10712)
* (...)

This update made test_script.py always fail:

root@d224c891145c:/usr/workspace# python test_script.py
test_case_1 (__main__.TestTemplate)
Find and click top-left logo button ... ERROR
test_case_2 (__main__.TestTemplate)
Find and click top-right Start your project button ... ERROR

======================================================================
ERROR: test_case_1 (__main__.TestTemplate)
Find and click top-left logo button
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/workspace/test_script.py", line 31, in test_case_1
    el = self.driver.find_element_by_class_name('header__logo')
AttributeError: 'WebDriver' object has no attribute 'find_element_by_class_name'

======================================================================
ERROR: test_case_2 (__main__.TestTemplate)
Find and click top-right Start your project button
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/workspace/test_script.py", line 40, in test_case_2
    el = self.driver.find_element_by_class_name("header__cta")
AttributeError: 'WebDriver' object has no attribute 'find_element_by_class_name'

----------------------------------------------------------------------
Ran 2 tests in 2.878s

FAILED (errors=2)

[alexanderroidl]

@joyzoursky ?