[py] Bump dependencies for dev and fix script

[cgoldberg]

User description

💥 What does this PR do?

This PR bumps development dependencies to their latest versions and re-generates dependency hashes.

Notes:

• the markdown-it-py transitive dependency is pinned to version 3.0.0 because the latest version (4.0.0) requires Python 3.10 and we need to support 3.9.
• the docutils transitive dependency is pinned to version 0.21.2 because the latest version (0.22) isn't compatible with the version of sphinx we use.

🔄 Types of changes

• Development/Build

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PR Type

Bug fix, Other

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Description

• Fixed regex pattern in dependency update script to correctly parse pip list output
• Bumped multiple Python development dependencies to their latest versions including certifi, charset-normalizer, cryptography, debugpy, and others
• Regenerated dependency hashes in requirements_lock.txt to match updated versions
• Note: markdown-it-py remains pinned to version 3.0.0 for Python 3.9 compatibility

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Diagram Walkthrough

flowchart LR A["update_py_dependencies.sh"] -- "fix regex pattern" --> B["Fixed Script"] C["requirements.txt"] -- "bump versions" --> D["Updated Dependencies"] D -- "regenerate hashes" --> E["requirements_lock.txt"] 

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File Walkthrough

	Relevant files
Bug fix	update_py_dependencies.sh Fix dependency update script regex pattern                              scripts/update_py_dependencies.sh • Fixed regex pattern in pip list parsing to match "Version" instead of "Version Latest" • This corrects the script's ability to properly identify outdated packages from pip list output +1/-1
Dependencies	requirements_lock.txt Bump locked development dependencies to latest versions    py/requirements_lock.txt • Updated certifi from 2025.6.15 to 2025.8.3 with new SHA256 hashes • Updated charset-normalizer from 3.4.2 to 3.4.3 with new SHA256 hashes • Updated cryptography from 45.0.5 to 45.0.6 with new SHA256 hashes • Updated debugpy from 1.8.14 to 1.8.16 with new SHA256 hashes • Updated multiple other dependencies including distlib, docutils, filelock, jaraco-functools, multidict, nh3, requests, rich, tox, and virtualenv +315/-323 requirements.txt Update development dependencies to latest versions              py/requirements.txt • Updated multiple development dependencies to their latest versions • Key updates include certifi, charset-normalizer, cryptography, debugpy, distlib, docutils, filelock, and others • All version bumps align with the corresponding changes in requirements_lock.txt +14/-14

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