[python] Upgrade TCGC 0.57.1 for http-client-python

[Copilot]

This PR upgrades dependencies for the @typespec/http-client-python package following the exact steps outlined in the issue:

Changes Made

• Dependency Update: Upgraded @azure-tools/typespec-client-generator-core from ~0.57.0 to ~0.57.1 in devDependencies
• Package Lock: Updated package-lock.json to reflect the new dependency version
• Change Entry: Added proper change documentation with type "dependencies" and message "bump typespec"

Process Followed

1. ✅ Navigated to packages/http-client-python directory
2. ✅ Installed npm-check-updates globally
3. ✅ Ran npx npm-check-updates -u --filter @typespec/*,@azure-tools/*
4. ✅ Executed npm install to update dependencies
5. ✅ Verified build compatibility (TypeScript compilation successful)
6. ✅ Added change entry using the project's chronus system

Validation

• The npm-check-updates tool identified exactly one package that could be safely upgraded
• TypeScript compilation succeeded, confirming compatibility with the updated dependency
• Only necessary files were committed (package.json, package-lock.json, change entry)
• Excluded venv_build_wheel/ directory as instructed

The upgrade is minimal and maintains full compatibility with the existing codebase.

Fixes #7610.

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[github-actions]

All changed packages have been documented.

• ✅ @typespec/http-client-python

Show changes

@typespec/http-client-python - dependencies ✏️

bump typespec

[msyyc]

@timotheeguerin It seems that we need one more approval to merge this PR. Appreciate if you could help approve this PR.