fix(deps): update spring core to v5.3.18

Author: renovate-bot

pom.xml

@@ -57,7 +57,7 @@
         <project.build.targetVersion>1.8</project.build.targetVersion>
 
         <jaxb2basicsVersion>0.12.0</jaxb2basicsVersion>
-        <springVersion>5.3.15</springVersion>
+        <springVersion>5.3.18</springVersion>
     </properties>
 
     <dependencyManagement>