ci(sign): Fix signing in Windows

[lucasssvaz]

Description of Change

This pull request updates the Windows binary signing process in the build_py_tools.yml GitHub Actions workflow. The manual PowerShell script for signing is replaced with the standardized espressif/release-sign GitHub Action, which integrates with Azure Key Vault for certificate management.

CI/CD Workflow Improvements:

• Replaced the custom PowerShell signing script with the espressif/release-sign GitHub Action, leveraging Azure Key Vault secrets for more secure and maintainable binary signing on Windows. (.github/workflows/build_py_tools.yml)

Test Scenarios

Will test after merge in open PR.

[github-actions]

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