RESTEasy Spring Boot Starter 3.1.0.Final is released and can be fetched from Github:

• Release 3.1.0.Final · resteasy/resteasy-spring-boot · GitHub

Here is the maven dependency section to include the new release in your project:

<dependency>
   <groupId>org.jboss.resteasy</groupId>
   <artifactId>resteasy-spring-boot-starter</artifactId>
   <version>3.1.0.Final</version>
   <scope>runtime</scope>
</dependency>

The change in this release is that it adopts RESTEasy 3.7.0.Final as dependency.