ci: ignore python version updates

[a-klos]

This pull request updates the .github/renovate.json configuration to add new rules for dependency management, specifically targeting Python-related dependencies and base images. The new rules are currently disabled, allowing for future flexibility in how Renovate handles Python interpreter and base image updates.

Python dependency management:

• Added a host rule to disable updates from the test PyPI registry (test.pypi.org).
• Added a rule to ignore Python interpreter version updates managed by poetry, with the rule disabled for now.

Docker image management:

• Added a rule to ignore updates to Python base images in Dockerfiles, including common package names, and set the rule as disabled.