Untis Calendar 1.1.2

What's Changed

• Update LICENSE by @maxmielchen in #16
• Improvement of the documentation by @maxmielchen in #18
• Update docker-publish.yml by @maxmielchen in #20
• Update docker-publish.yml by @maxmielchen in #21
• Update pom.xml by @maxmielchen in #22

Full Changelog: v1.1.1...v1.1.2