3.0.0 (Switch Alpine images to AdoptOpenJDK)

This major release indicates potentially breaking changes in the Alpine JDK 11 images. All other images remain fully compatible with the previous versions. Windows tags are skipped for this release, but there is no actual changes in these images.

💥 Breaking changes in Alpine

• Switch the Alpine JDK8 base images to adoptopenjdk/openjdk8 images (#150) @oleg-nenashev
• Upgrade the Alpine Linux from 3.6 to 3.12 (release notes)
• Remove/add/update packages due to the difference between base images (packages diff)

👻 Maintenance

• Switch Release Drafter to a GitHub Action (#61) @oleg-nenashev
• JEP-15 - Add a sponsor badge to the repository (#58) @oleg-nenashev