Use non-root install by default

[SS1823]

Description:
Non-root install in tool cache using Microsoft provided binary archives.

Justification:
self-shosted runners should be run as non-privileged user for security.
The action is unable to install dotnet without hacks, that are hard to maintain.

Are you willing to submit a PR?
I can try.

[dusan-trickovic]

Hello, @SS1823 ! Thank you for your suggestion, we will take into consideration and see what can be done :)

[SS1823]

btw, there's https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/releases-index.json API and additionally each release has own release.json endpoint, along with all the .zip/tar.gz urls