fix(deps): update dependency org.springframework.security:spring-secu…

…rity-core to v5.8.15

pom.xml

@@ -43,7 +43,7 @@
     <servlet-api.version>2.5</servlet-api.version>
     <slf4j.version>1.7.36</slf4j.version>
     <spring-security-portlet-contrib.version>1.2.1</spring-security-portlet-contrib.version>
-    <spring-security.version>5.7.12</spring-security.version>
+    <spring-security.version>5.8.15</spring-security.version>
     <spring-ws.version>2.4.7.RELEASE</spring-ws.version>
     <spring.version>3.2.18.RELEASE</spring.version>
     <spock.version>0.7-groovy-2.0</spock.version>