chore(pyproject): disable COM812 ruff rule

[mirzak]

From the docs [1]:

We recommend against using this rule alongside the formatter.
The formatter enforces consistent use of trailing commas,
making the rule redundant.

Fixes the following warning:

warning: The following rule may cause conflicts when used with
the formatter: `COM812`. To avoid unexpected behavior, we
recommend disabling this rule, either by removing it from the
`lint.select` or `lint.extend-select` configuration, or adding
it to the `lint.ignore` configuration.

1. https://docs.astral.sh/ruff/rules/missing-trailing-comma/

[Copilot]

Pull Request Overview

This PR addresses a configuration conflict between Ruff's linting rules and formatter by disabling the COM812 rule (missing-trailing-comma) as recommended by the tool's documentation.

Key Changes:

• Added ignore section to Ruff lint configuration to exclude COM812 rule

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