Use the same version of Bandit throughout the pre-commit config file

It doesn't make sense to run Bandit twice with different versions.

.pre-commit-config.yaml

@@ -132,7 +132,7 @@ repos:
           - --config=.bandit.yml
   # Run bandit on everything except the "tests" tree
   - repo: https://github.com/PyCQA/bandit
-    rev: 1.7.7
+    rev: 1.7.8
     hooks:
       - id: bandit
         name: bandit (everything else)