OZG-3630 upgrade to spring 6

common/pom.xml

...e/itvsh/kop/eingangsadapter/common/formdata/FormData.java

formsolutions-adapter/pom.xml

intelliform-adapter/pom.xml

...vsh/kop/eingangsadapter/intelliform/FormDataEndpoint.java

.../eingangsadapter/intelliform/XmlToJavaMapsMapperTest.java

pom.xml

...java/de/itvsh/kop/eingangsadapter/router/CallContext.java

...vsh/kop/eingangsadapter/router/GrpcClientsProperties.java

...itvsh/kop/eingangsadapter/router/PlutoListProperties.java

...itvsh/kop/eingangsadapter/router/PlutoServerResolver.java

...h/kop/eingangsadapter/router/PlutoListPropertiesTest.java

...ter/semantik/enginebased/formsolutions/ZipAttachment.java