v0.21.0

What's Changed

• BAS-75 Add OpenJDK setup action by @hazim-j in #140
• BAS-72 Add Android SDK setup action by @hazim-j in #141
• Rename setup_openjdk action by @hazim-j in #142
• BAS-73 Add setup_maestro built-in action by @hazim-j in #143

Full Changelog: v0.20.0...v0.21.0