v0.9.4

• #62 Remove dependency on Zalando Problem library, yet still supported if present on classpath
• #60 Throwing problems with http headers
• #64 Opening HttpProblem for inheritance
• #65 Added message field to Violation DTO, which replaces deprecated error
• Quarkus bumped to 1.13.1.Final
• #66 Native mode test run in CI pipeline
• #69 Set default locale to en-US