fix(deps): update spring.version to v6 [security]

Author: renovate[bot]

pom.xml

@@ -63,7 +63,7 @@
         <resource-server.version>1.3.1</resource-server.version>
         <servlet.version>3.1.0</servlet.version>
         <slf4j.version>2.0.16</slf4j.version>
-        <spring.version>5.3.28</spring.version>
+        <spring.version>6.0.0</spring.version>
         <spring-data.version>2.7.15</spring-data.version>
         <portletmvc4spring.version>5.2.0</portletmvc4spring.version>
         <uportal-maven-plugin.version>1.0.1</uportal-maven-plugin.version>