[BUG] mypy code are not whell catched

[sbrunner]

Describe the bug A clear and concise description of what the bug is.

The mypy code are info or error but they should be like no-untyped-def.

To Reproduce Steps to reproduce the behavior:

1. Create a file with

   def test():
       pass

2. Call prospector the following way prospector --output-format=pylint test.py' (the mypy tool should be enabled)
3. See error

   ************* Module test
   test.py:1:1: error(mypy): Function is missing a return type annotation  [no-untyped-def]
   

Expected behavior A clear and concise description of what you expected to happen.

************* Module test
test.py:1:1: no-untyped-def(mypy): Function is missing a return type annotation

Environment (please complete the following information):

• OS: Linus
• Tool mypy
• Prospector version 1.13.3
• Python version 3.11.9