v4.0.0 🎁

📦 Dependency updates

• Bump testcontainers.version from 1.20.1 to 1.20.2 (#367) @dependabot
• Bump edu.hm.hafner:autograding-model from 3.33.0 to 3.34.0 (#366) @dependabot
• Bump edu.hm.hafner:codingstyle-pom from 4.12.0 to 4.16.0 (#364) @dependabot
• Bump edu.hm.hafner:autograding-model from 3.32.0 to 3.33.0 (#365) @dependabot
• Bump org.kohsuke:github-api from 1.324 to 1.326 (#362) @dependabot
• Bump org.kohsuke:github-api from 1.323 to 1.324 (#358) @dependabot
• Bump testcontainers.version from 1.19.8 to 1.20.1 (#357) @dependabot
• Bump org.kohsuke:github-api from 1.322 to 1.323 (#355) @dependabot
• Bump edu.hm.hafner:codingstyle-pom from 4.11.0 to 4.12.0 (#353) @dependabot
• Bump org.kohsuke:github-api from 1.321 to 1.322 (#354) @dependabot
• Bump com.google.cloud.tools:jib-maven-plugin from 3.4.2 to 3.4.3 (#352) @dependabot
• Bump edu.hm.hafner:codingstyle-pom from 4.10.0 to 4.11.0 (#351) @dependabot
• Bump edu.hm.hafner:codingstyle-pom from 4.9.0 to 4.10.0 (#349) @dependabot
• Bump edu.hm.hafner:codingstyle-pom from 4.5.0 to 4.9.0 (#346) @dependabot
• Bump testcontainers.version from 1.19.7 to 1.19.8 (#347) @dependabot
• Bump edu.hm.hafner:autograding-model from 3.31.1 to 3.32.0 (#348) @dependabot
• Bump edu.hm.hafner:autograding-model from 3.31.0 to 3.31.1 (#343) @dependabot
• Bump edu.hm.hafner:autograding-model from 3.30.0 to 3.31.0 (#342) @dependabot
• Bump edu.hm.hafner:codingstyle-pom from 4.3.0 to 4.5.0 (#341) @dependabot
• Bump edu.hm.hafner:autograding-model from 3.28.0 to 3.30.0 (#340) @dependabot
• Bump com.google.cloud.tools:jib-maven-plugin from 3.4.1 to 3.4.2 (#338) @dependabot

🔧 Internal changes

• Use quality monitor in CI (#350) @uhafner