[BUG] Minimum requirement for jaraco.functools

### setuptools version

75.1.0

### Python version

3.10

### OS

MacOS

### Additional environment information

_No response_

### Description

setuptools uses a function from `jaraco.functools` called `splat`:

https://github.com/pypa/setuptools/blob/v75.1.0/setuptools/_distutils/_modified.py#L6



That function is only available from version 4.x.x. So `jaraco.functools` should have a minimum requirement:

https://github.com/pypa/setuptools/blob/v75.1.0/pyproject.toml#L106

### Expected behavior

Should have a version conflict when installing setuptools in combination with other packages that require jaraco.functools < 4.

### How to Reproduce

Install setuptools with another package that require jaraco.functools < 4.

### Output

```console

File "/app/xxx.py", line 9, in <module>

  from distutils.util import strtobool

File "/poetry-env/lib/python3.10/site-packages/setuptools/_distutils/util.py", line 23, in <module>

  from ._modified import newer

File "/poetry-env/lib/python3.10/site-packages/setuptools/_distutils/_modified.py", line 6, in <module>

  from jaraco.functools import splat

ImportError: cannot import name 'splat' from 'jaraco.functools' (/poetry-env/lib/python3.10/site-packages/jaraco/functools.py)

```

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