Fix incorrect addCleanup that breaks with 3.8.3

[lmazuel]

No description provided.

[mmyyrroonn]

Hi. After some debugging for azure CLI, there is another place we need to fix.

azure-python-devtools/src/azure_devtools/scenario_tests/base.py

Lines 131 to 133 in a9cca7d

	cm = self.vcr.use_cassette(self.recording_file)
	self.cassette = cm.__enter__()
	self.addCleanup(cm.__exit__)

it should be

self.addCleanup(cm.__exit__, None, None, None) 

as well.

[mmyyrroonn]

My fault. This PR is enough to fix the problem~