Update add-license-headers version (#277)

Author: klmcadams

.pre-commit-config.yaml

@@ -31,7 +31,7 @@ repos:
     args: [-I, .codespellignore]
 
 - repo: https://github.com/ansys/pre-commit-hooks
-  rev: v0.2.7
+  rev: v0.2.8
   hooks:
   - id: add-license-headers
     files: '(ansys|examples|tests)/.*\.(py)|\.(proto)|generate_resources.py|build.py|archive_examples.py'