ci(ruff): Ignore PTH in workspace/finders.py

This relies a lot on supporting tmuxp files and directory strings,
e.g. "my_session" equating to ~/config/.tmuxp/my_session.{yaml,json} and
tmuxp load . which equates to cwd .tmuxp.{yaml.json}.

Author: tony

pyproject.toml

@@ -180,6 +180,7 @@ combine-as-imports = true
 
 [tool.ruff.per-file-ignores]
 "*/__init__.py" = ["F401"]
+"src/tmuxp/workspace/finders.py" = ["PTH"]
 
 [build-system]
 requires = ["poetry_core>=1.0.0"]