FixIsortVersionDeps: Use isort 5.11.5

This fixes the incompatibility issue with poetry core that showed up in
CI. In isort 5.12.0, support for python 3.7 was dropped, so we need to
stay below that. This release was a hotfix patch to support <3.8

https://stackoverflow.com/a/75295105
https://github.com/PyCQA/isort/releases/tag/5.11.5

Signed-off-by: Gabe Goodhart <ghart@us.ibm.com>

.pre-commit-config.yaml

@@ -9,7 +9,7 @@ repos:
           - id: black
             exclude: imports
     - repo: https://github.com/PyCQA/isort
-      rev: 5.6.3
+      rev: 5.11.5
       hooks:
           - id: isort
             exclude: imports