chore: update python version r1

[Sagargupta16]

Maintenance update

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Copilot]

Pull request overview

This PR introduces a new .python-version file at the repository root, intended to pin the local Python interpreter version for tools like pyenv and uv.

Changes:

• Adds a .python-version file pinning Python to version 3.11

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[Copilot]

The .python-version file sets the Python version to 3.11, but the rest of the project consistently uses Python 3.12:

• CI workflow (.github/workflows/ci.yml, line 22) pins python-version: '3.12'
• render.yaml (line 11) sets PYTHON_VERSION: "3.12.0" for the production deployment
• pyproject.toml (line 72) configures mypy with python_version = "3.12"

This mismatch means local environments using pyenv or uv (which both respect .python-version) will run Python 3.11, while CI and production run Python 3.12. This could lead to hard-to-debug discrepancies (e.g., type-checking inconsistencies, syntax or behaviour differences). The value should be updated to 3.12 to be consistent with the rest of the stack.

Suggested change

	3.11
	3.12