pre-commit: upgrade isort to 5.1.4

Author: scop

.pre-commit-config.yaml

@@ -50,7 +50,7 @@ repos:
         exclude: completions/
 
   - repo: https://github.com/timothycrosley/isort
-    rev: 5.0.7
+    rev: 5.1.4
     hooks:
       - id: isort
         args: [--settings-path=test/setup.cfg]