fix(deps): update spring core to v6

Author: renovate[bot]

pom.xml

@@ -59,7 +59,7 @@
         <portlet-api.version>2.0</portlet-api.version>
         <resource-server.version>1.0.44</resource-server.version>
         <servlet-api.version>2.5</servlet-api.version>
-        <spring.version>4.3.30.RELEASE</spring.version>
+        <spring.version>6.2.0</spring.version>
         <logbackVersion>1.3.12</logbackVersion>
         <slf4jVersion>2.0.6</slf4jVersion>
         <mockito.version>4.11.0</mockito.version>