code: def git_existing_tag_versions() -> List[Version]:
      """Return all existing tags in the local git repo."""
      stdout = check_output(["git", "tag"])
      tags = set(stdout.decode().split("\n"))
      versions = [Version(tag) for tag in tags if is_valid_version(tag)]
      return versions
  
file_path: rasa/scripts/evaluate_release_tag.py
imports: import argparse
  from subprocess import check_output
  from typing import List
  from pep440_version_utils import Version, is_valid_version
label_desc: Use image node_id 3 for calling a global function with example usage: git_existing_tag_versions() and returns: versions