fix(deps): update dependency org.entur:netex-parser-java from v3.0.5 to v3.1.20

Author: renovate[bot]

pom.xml

@@ -15,7 +15,7 @@
     <properties>
         <java.version>21</java.version>
         <entur.helpers.version>2.5</entur.helpers.version>
-        <netex-parser-java.version>3.0.5</netex-parser-java.version>
+        <netex-parser-java.version>3.1.20</netex-parser-java.version>
         <jakarta-xml-bind.version>4.0.2</jakarta-xml-bind.version>
         <glassfish-jaxb.version>4.0.5</glassfish-jaxb.version>
         <entur-kafka-spring-starter.version>3.3.0.3</entur-kafka-spring-starter.version>