fix(deps): update dependency org.springframework:spring-webmvc-portle…

…t to v3.2.18.release (#42)

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

pom.xml

@@ -45,7 +45,7 @@
     <spring-security-portlet-contrib.version>1.2.1</spring-security-portlet-contrib.version>
     <spring-security.version>3.1.3.RELEASE</spring-security.version>
     <spring-ws.version>2.4.7.RELEASE</spring-ws.version>
-    <spring.version>3.2.15.RELEASE</spring.version>
+    <spring.version>3.2.18.RELEASE</spring.version>
     <spock.version>0.7-groovy-2.0</spock.version>
     <tomcat-jdbc.version>7.0.109</tomcat-jdbc.version>