Update to new action logging syntax

What's Changed

• Replace deprecated ::set-output by @offa in #1
• Enable yaml syntax coloring by @offa in #2
• Update checkout action to v3 by @offa in #3

New Contributors

• @offa made their first contribution in #1

Full Changelog: 1.0.0...1.1.0

Initial release

1.0.0

Use pip3 to get ninja