Update dependency mock to v5 (#128)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

requirements.txt

@@ -7,6 +7,6 @@ flake8-docstrings==1.6.0
 flake8-import-order==0.18.2
 flake8-print==5.0.0
 flake8-string-format==0.3.0
-mock==4.0.3
+mock==5.1.0
 requests==2.31.0
 pytz==2022.7.1