Add 3.1.x to the readme

Author: reda-alaoui

README.md

@@ -313,6 +313,7 @@ You can play with https://github.com/Cosium/spring-data-jpa-entity-graph-sample
 
 | [Spring Data JPA](https://github.com/spring-projects/spring-data-jpa) version | [Spring Data JPA EntityGraph](https://github.com/Cosium/spring-data-jpa-entity-graph) version                                                                                                                                                                |
 |-------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| 3.1.x                                                                         | [![Maven Central 3.1.x](https://img.shields.io/maven-central/v/com.cosium.spring.data/spring-data-jpa-entity-graph/3.1.svg)](https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.cosium.spring.data%22%20AND%20a%3A%22spring-data-jpa-entity-graph%22)   |
 | 3.0.x                                                                         | [![Maven Central 3.0.x](https://img.shields.io/maven-central/v/com.cosium.spring.data/spring-data-jpa-entity-graph/3.0.svg)](https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.cosium.spring.data%22%20AND%20a%3A%22spring-data-jpa-entity-graph%22)   |
 | 2.7.x                                                                         | [![Maven Central 2.7.x](https://img.shields.io/maven-central/v/com.cosium.spring.data/spring-data-jpa-entity-graph/2.7.svg)](https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.cosium.spring.data%22%20AND%20a%3A%22spring-data-jpa-entity-graph%22)   |
 | 2.6.x                                                                         | [![Maven Central 2.6.x](https://img.shields.io/maven-central/v/com.cosium.spring.data/spring-data-jpa-entity-graph/2.6.svg)](https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.cosium.spring.data%22%20AND%20a%3A%22spring-data-jpa-entity-graph%22)   |