feat: remove python 3.9

[FilipPyrek]

Summary by CodeRabbit

Release Notes

• Chores
  • Updated minimum supported Python version from 3.9 to 3.10.
  • Added support for Python 3.11, 3.12, and 3.13.
  • Python 3.9 is no longer supported.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request removes Python 3.9 support and establishes Python 3.10 as the minimum version across the project. The changes include updating CI/CD configuration (.circleci/config.yml) to remove Python 3.9 from test matrices, updating Docker base image versions in multiple Dockerfiles (ir-base and conda) from Python 3.9 to 3.10, deleting the Python 3.9-specific Dockerfile, and updating documentation to reflect the new supported version range (3.10 through 3.13).

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly and concisely describes the main change: removing Python 3.9 support. It matches the changeset which updates minimum Python version to 3.10 across CI config, Dockerfiles, and documentation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}