Log Message:
lua-penlight: update to 1.11.0

## 1.11.0 (2021-08-18)

 - fix: `stringx.strip` behaved badly with string lengths > 200
 - fix: `path.currentdir` now takes no arguments and calls `lfs.currentdir` \ 
without argument
 - feat: `utils.raise_deprecation` now has an option to NOT include a
   stack-trace