test: use built-in collection types for type hints (Python 3.9 / PEP 585)

Since Python 3.9, type hinting has become a little less awkward, as for
collection types one doesn't need to import the corresponding
capitalized types (`Dict`, `List`, `Set`, `Tuple`, ...) anymore, but can
use the built-in types directly. [1] [2]
This commit applies the replacement for all Python scripts (i.e. in the
contrib and test folders) for the basic types:
    - typing.Dict  -> dict
    - typing.List  -> list
    - typing.Set   -> set
    - typing.Tuple -> tuple

[1] https://docs.python.org/3.9/whatsnew/3.9.html#type-hinting-generics-in-standard-collections
[2] https://peps.python.org/pep-0585/#implementation for a list of type

contrib/devtools/test-security-check.py

@@ -8,7 +8,6 @@ Test script for security-check.py
 import lief
 import os
 import subprocess
-from typing import List
 import unittest
 
 from utils import determine_wellknown_cmd
@@ -34,7 +33,7 @@ def call_security_check(cc: str, source: str, executable: str, options) -> tuple
     #
     # See the definitions for ac_link in autoconf's lib/autoconf/c.m4 file for
     # reference.
-    env_flags: List[str] = []
+    env_flags: list[str] = []
     for var in ['CFLAGS', 'CPPFLAGS', 'LDFLAGS']:
         env_flags += filter(None, os.environ.get(var, '').split(' '))