Bump hypothesis from 5.37.1 to 5.37.3 (#595)

Author: dependabot[bot]

requirements/requirements_dev.txt

@@ -6,7 +6,7 @@ dlint==0.10.3
 flake8==3.8.4
 flake8-bandit==2.1.2
 flake8-bugbear==20.1.4
-hypothesis==5.37.1
+hypothesis==5.37.3
 placebo==0.9.0
 pre-commit==2.7.1
 pylint==2.6.0