ci: Add 'name-tests-test' to pre-commit hooks (#1877)

* Add the 'name-tests-test' pre-commit hooks which verifies that test files
under tests/ conform to pytest naming conventions.
   - Use the '--django' option to match the 'test*.py' naming convention.

.pre-commit-config.yaml

@@ -19,6 +19,8 @@ repos:
       # exclude generated files
       exclude: ^validation/|\.dtd$|\.json$|\.xml$
     - id: mixed-line-ending
+    - id: name-tests-test
+      args: ["--django"]
     - id: requirements-txt-fixer
     - id: trailing-whitespace
       # exclude generated files