Replaced deprecated find_pylintrc by find_default_config_files

[perestoronin]

Replaced deprecated find_pylintrc by find_default_config_files

PS. inpired by https://github.com/spyder-ide/spyder/pull/21470/files

Description

patch error cannot import name 'find_pylintrc' from 'pylint.config' for latest pylint 3.0.2

Related Issue

pylint-dev/pylint#9105

Motivation and Context

To work prospector with last pylint 3.0.2

How Has This Been Tested?

run prospector --help with latest pylint 3.0.2 without error about

File "/usr/lib/python3.11/site-packages/prospector/tools/pylint/__init__.py", line 8, in <module>
    from pylint.config import find_pylintrc
ImportError: cannot import name 'find_pylintrc' from 'pylint.config' (/usr/lib/python3.11/site-packages/pylint/config/__init__.py)

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the code style of this project.
• I have read the CONTRIBUTING document.
• All new and existing tests passed.

[Pierre-Sassoulas]

LGTM