Fix lint for aiobotocore_tests.py

[basepi]

What does this pull request do?

Don't know how these slipped through, as the lint passed for the PR in question. We'll have to see if that happens again.

Ref #1520
Closes #1522

[apmmachine]

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• Start Time: 2022-04-07T21:13:49.769+0000

• Duration: 22 min 19 sec

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Test	Results
Failed	0
Passed	4829
Skipped	3293
Total	8122

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[basepi]

Closing in favor of #1526