replace spring-boot-starter-redis with spring-boot-starter-data-redis

(spring-boot-starter-redis is deprecated as of Spring Boot 1.4)

kanban-console/pom.xml

@@ -65,7 +65,7 @@
         <!-- Redis session -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-redis</artifactId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework.session</groupId>