ci: update windows install script

[tonyfettes]

No description provided.

[peter-jerry-ye-code-review]

1. URL Change in Script: The URL in the irm command has changed from https://cli.moonbitlang.com/windows_moon_setup.ps1 to https://cli.moonbitlang.com/install/powershell.ps1. This might be a typo or a change that could affect the script's functionality. It's important to ensure that the new URL is correct and points to the intended script.

2. Execution Policy Usage: The Set-ExecutionPolicy RemoteSigned -Scope CurrentUser command is used to allow PowerShell scripts to run. This might be necessary for the script execution, but it's important to ensure that this change doesn't introduce security risks, especially in a CI/CD environment. Consider if this policy setting is the most secure option for your workflow.

3. Path Management: The path "C:\Users\runneradmin\.moon\bin" is being added to the GITHUB_PATH environment variable. Ensure that this path is indeed the correct path where the executables are stored. If the path changes or is incorrect, it could lead to errors in the subsequent steps of the workflow.

[tonyfettes]

closed by #52