v2.9.1

📝 Documentation

• Clarify documentation about registration and database authentication by @loicgreffier in #944

⬆️ Dependency updates

• Bump org.springdoc:springdoc-openapi-starter-webmvc-ui from 2.8.3 to 2.8.4 by @dependabot[bot] in #937
• Bump com.puppycrawl.tools:checkstyle from 10.21.1 to 10.21.2 by @dependabot[bot] in #938
• Bump graalvm.version from 24.1.1 to 24.1.2 by @dependabot[bot] in #939
• Bump org.springdoc:springdoc-openapi-starter-webmvc-ui from 2.8.4 to 2.8.5 by @dependabot[bot] in #942
• Bump com.puppycrawl.tools:checkstyle from 10.21.2 to 10.21.3 by @dependabot[bot] in #947
• Bump testcontainers.version from 1.20.4 to 1.20.5 by @dependabot[bot] in #946
• Bump ncipollo/release-action from 1.15.0 to 1.16.0 by @dependabot[bot] in #945

💚 CI/CD

• Add Maven cache by @loicgreffier in #940
• Prevent SonarQube running on fork by @loicgreffier in #941
• Update variable used to skip Sonar job on fork by @loicgreffier in #943