Fix duplicate POM properties

Author: veithen

pom.xml

@@ -488,8 +488,6 @@
         <maven.version>3.9.9</maven.version>
         <rhino.version>1.6R7</rhino.version>
         <slf4j.version>2.0.16</slf4j.version>
-        <spring.version>5.3.34</spring.version>
-        <slf4j.version>2.0.16</slf4j.version>
         <spring.version>6.1.3</spring.version>
         <wsdl4j.version>1.6.3</wsdl4j.version>
         <xmlbeans.version>3.0.1</xmlbeans.version>