chore(deps): update dependency org.instancio:instancio-junit to v5 (#188)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

backend-java/pom.xml

@@ -93,7 +93,7 @@
     <dependency>
       <groupId>org.instancio</groupId>
       <artifactId>instancio-junit</artifactId>
-      <version>4.8.1</version>
+      <version>5.0.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>