Fix: don't use urllib3 2.6.0 for incompatible change

[mainred]

Related command

Description

urllib 2.6.0 removed HTTPResponse.getheader and blocks many libraries including kubernetes-client, which is used in several cli extensions including aks-agent, container-app and k8s-extension. urllib3 team has restored this function since 2.6.1.

urllib3/urllib3#3731

Testing Guide

History Notes

[Component Name 1] BREAKING CHANGE: az command a: Make some customer-facing breaking change
[Component Name 2] az command b: Add some customer-facing feature

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[azure-client-tools-bot-prd]

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[azure-client-tools-bot-prd]

Hi @mainred,
Since the current milestone time is less than 7 days, this pr will be reviewed in the next milestone.

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[azure-client-tools-bot-prd]

Validation for Breaking Change Starting...

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[github-actions]

The git hooks are available for azure-cli and azure-cli-extensions repos. They could help you run required checks before creating the PR.

Please sync the latest code with latest dev branch (for azure-cli) or main branch (for azure-cli-extensions).
After that please run the following commands to enable git hooks:

pip install azdev --upgrade
azdev setup -c <your azure-cli repo path> -r <your azure-cli-extensions repo path>

[Copilot]

Pull request overview

This pull request updates the urllib3 dependency from version 2.6.0 to 2.6.3 to address an incompatibility issue where urllib3 2.6.0 removed the HTTPResponse.getheader method, which broke several CLI extensions including aks-agent, container-app, and k8s-extension. Version 2.6.1+ restores this functionality.

Changes:

• Updated urllib3 from 2.6.0 to 2.6.3 in Windows and Linux requirements files

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/azure-cli/requirements.py3.windows.txt	Updated urllib3 dependency to version 2.6.3 for Windows platform
src/azure-cli/requirements.py3.Linux.txt	Updated urllib3 dependency to version 2.6.3 for Linux platform

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