ci: bump isort to 5.12.0 (backport frappe#33875) (frappe#33880)

ci: bump isort to 5.12.0 (frappe#33875)

[skip ci]

(cherry picked from commit 2bad86d)

Co-authored-by: Deepesh Garg <deepeshgarg6@gmail.com>
Co-authored-by: Raffael Meyer <14891507+barredterra@users.noreply.github.com>

.pre-commit-config.yaml

@@ -32,8 +32,8 @@ repos:
       - id: black
         additional_dependencies: ['click==8.0.4']
 
-  - repo: https://github.com/timothycrosley/isort
-    rev: 5.9.1
+  - repo: https://github.com/PyCQA/isort
+    rev: 5.12.0
     hooks:
       - id: isort
         exclude: ".*setup.py$"