fix embedded helper import (tomli)

helpers/__main__.py

@@ -10,7 +10,14 @@ from __future__ import annotations
 from typing import TYPE_CHECKING
 
 from pathlib import Path
-import tomli
+
+b_use_tomli=False
+try:
+    import tomli
+    b_use_tomli=True
+except ImportError:
+    import tomllib
+    
 import argparse
 import os
 import logging
@@ -37,7 +44,10 @@ if __name__ == "__main__":
     project_rootdir_path = Path(__file__).parent.parent.absolute()
 
     with open(project_rootdir_path / "pyproject.toml", mode="rb") as fp:
-        pyproject = tomli.load(fp)
+        if b_use_tomli:
+            pyproject = tomli.load(fp)
+        else:
+            pyproject = tomllib.load(fp)
 
     parser = argparse.ArgumentParser(
         prog="continuous-integration-helper", description="A tiny set of scripts to help continous integration on python"