increased spring to 2.1.5

Author: Death111

pom.xml

@@ -27,7 +27,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>2.1.4.RELEASE</version>
+    <version>2.1.5.RELEASE</version>
     <relativePath /> <!-- lookup parent from repository -->
   </parent>