fix(azuredevops): fix environment field in cicd_tasks and cicd_pipelines

[d4x1]

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Summary

What does this PR do?
environment field in cicd_tasks and cicd_pipelines is a varchar type, but in Python, it's defined with type hint like

environment: Optional[CICDEnvironment]
# CICDEnvironment is an enum class.

If the value you assign to environment is a string, it cannot work as expected.
Otherwise, if environment is defined like

environment: Optional[str]

and you assign it with an enum, it cannot work either.

Does this close any open issues?

Closes N/A.

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With same scope config

Before

#### After

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