Bump pytest from 6.2.5 to 7.2.2 (#1604)

Author: dependabot[bot]

requirements/requirements_dev.txt

@@ -10,7 +10,7 @@ invoke==1.6.0
 placebo==0.10.0
 pre-commit==2.20.0
 pylint==2.17.0
-pytest==6.2.5
+pytest==7.2.2
 pytest-black==0.3.12
 pytest-cov==3.0.0
 pytest-datadir==1.4.1