Use releases/latest url instead api to get lastest artifact

[jkroepke]

Reduce extra calls the gh API

% curl -sI https://github.com/databus23/helm-diff/releases/latest/download/helm-diff-windows.tgz | grep location:
location: https://github.com/databus23/helm-diff/releases/download/v3.1.3/helm-diff-windows.tgz

Fixes #284

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[jkroepke]

.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[mumoshu]

Nice! I added -$ARCH to the URL as we've recently started publishing arch-specific archives, mainly for M1 mac support.

[mumoshu]

Thanks for your contribution @jkroepke ☺️