Merge pull request #330 from g-as/feature/pyupgrade_python_target_version

bumped pyupgrade python target version to 3.7

Author: Giuseppe De Marco

.pre-commit-config.yaml

@@ -16,7 +16,7 @@ repos:
     rev: v2.31.1
     hooks:
       - id: pyupgrade
-        args: [--py36-plus]
+        args: [--py37-plus]
 
   - repo: https://github.com/myint/autoflake
     rev: 'v1.4'