Merge bitcoin/bitcoin#28725: test: refactor: use built-in collection types for type hints (Python 3.9 / PEP 585)

a478c817b2 test: replace `Callable`/`Iterable` with their `collections.abc` alternative (PEP 585) (stickies-v)
4b9afb18e6 scripted-diff: use PEP 585 built-in collection types for verify-binary script (Sebastian Falbesoner)
d516cf83ed test: use built-in collection types for type hints (Python 3.9 / PEP 585) (Sebastian Falbesoner)

Pull request description:

  With Python 3.9 / [PEP 585](https://peps.python.org/pep-0585/), [type hinting has become a little less awkward](https://docs.python.org/3.9/whatsnew/3.9.html#type-hinting-generics-in-standard-collections), 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 (see  https://peps.python.org/pep-0585/#implementation for the full list).

  This PR applies the replacement for all Python scripts (i.e. in the contrib and test folders) for the basic types, i.e.:

  - typing.Dict -> dict
  - typing.List -> list
  - typing.Set  -> set
  - typing.Tuple -> tuple

  For an additional check, I ran mypy 1.6.1 on both master and the PR branch via
  ```
  $ mypy --ignore-missing-imports --explicit-package-bases $(git ls-files "*.py")
  ```
  and verified that the output is identical -- (from the 22 identified problems, most look like false-positives, it's probably worth it to go deeper here and address them in a follow-up though).

ACKs for top commit:
  stickies-v:
    ACK a478c817b2
  fanquake:
    ACK a478c817b2

Tree-SHA512: 6948c905f6abd644d84f09fcb3661d7edb2742e8f2b28560008697d251d77a61a1146ab4b070e65b0d27acede7a5256703da7bf6eb1c7c3a897755478c76c6e8

test/functional/test_framework/util.py

@@ -19,7 +19,8 @@ import time
 
 from . import coverage
 from .authproxy import AuthServiceProxy, JSONRPCException
-from typing import Callable, Optional, Tuple
+from collections.abc import Callable
+from typing import Optional
 
 logger = logging.getLogger("TestFramework.utils")
 
@@ -409,7 +410,7 @@ def get_datadir_path(dirname, n):
     return pathlib.Path(dirname) / f"node{n}"
 
 
-def get_temp_default_datadir(temp_dir: pathlib.Path) -> Tuple[dict, pathlib.Path]:
+def get_temp_default_datadir(temp_dir: pathlib.Path) -> tuple[dict, pathlib.Path]:
     """Return os-specific environment variables that can be set to make the
     GetDefaultDataDir() function return a datadir path under the provided
     temp_dir, as well as the complete path it would return."""