.gitignore: add py/python.iml

[Delta456]

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Description

Adds py/python.iml in .gitignore

Motivation and Context

IDEs overwrites py/python.xml when using a different Python version.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

other

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Description

• Adds py/python.iml to .gitignore to prevent IDEs from overwriting py/python.xml when using a different Python version.

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Changes walkthrough 📝

	Relevant files

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