Remove Python 3.9 support. Add Python 3.14 support.

[petyaslavova]

Pull Request check-list

Please make sure to review and check all of these items:

• Do tests and lints pass with this change?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

Please provide a description of the change here.

[Copilot]

Pull Request Overview

This PR removes support for Python 3.9 and adds support for Python 3.14, bumping the major version from 6.2.0 to 7.0.0. The changes update minimum Python version requirements, CI/CD workflows, and project metadata to reflect the new supported Python version range.

• Updated minimum Python version requirement from 3.9 to 3.10
• Added Python 3.14 to supported versions and test matrices
• Bumped package version from 6.2.0 to 7.0.0

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
redis/init.py	Version bump from 6.2.0 to 7.0.0
pyproject.toml	Updated minimum Python requirement, classifiers, and Ruff target version
.readthedocs.yml	Changed documentation build Python version from 3.9 to 3.10
.github/workflows/pypi-publish.yaml	Updated PyPI publish workflow to use Python 3.10
.github/workflows/integration.yaml	Updated test matrices to replace 3.9 with 3.10 and add 3.14
.github/workflows/hiredis-py-integration.yaml	Updated hiredis integration tests to use Python 3.10 instead of 3.9
.github/workflows/docs.yaml	Updated documentation workflow to use Python 3.10

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}