pnpm/setup prints deprecation warnings with Node.js 24 on GitHub actions

[ludofischer]

The GitHub action logs show these lines after the Running pnpm install --no-runtime.. step:

[DEP0190] DeprecationWarning: Passing args to a child process with shell option true can lead to security vulnerabilities, as the arguments are not escaped, only concatenated.

Ideally, using the pnpm/setup action should not cause warnings to be printed.

Version pnpm/setup 2.0.0