code: def version() -> Version:
      return Version(get_version("pngquant", regex=r"(\d+(\.\d+)*).*"))
  
file_path: OCRmyPDF/src/ocrmypdf/_exec/pngquant.py
imports: from __future__ import annotations
  from pathlib import Path
  from subprocess import PIPE
  from packaging.version import Version
  from ocrmypdf.exceptions import MissingDependencyError
  from ocrmypdf.subprocess import get_version, run
label_desc: Use image node_id 1 for calling a global function with example usage: version() and returns: Version