OZG-7324: Fix License Header

...va/de/ozgcloud/formcycle/errorhandling/ExceptionUtil.java

...ud/formcycle/errorhandling/NodeThrewExceptionFactory.java

...oud/formcycle/errorhandling/OzgCloudRequestException.java

...a/de/ozgcloud/formcycle/errorhandling/OzgPluginError.java

.../ozgcloud/formcycle/errorhandling/OzgPluginSoftError.java

.../ozgcloud/formcycle/errorhandling/TechnicalException.java

...ormcycle/errorhandling/UnexpectedTrustLevelException.java

...ain/java/de/ozgcloud/formcycle/errorhandling/Warning.java

src/main/java/de/ozgcloud/formcycle/formdata/FormData.java

src/main/java/de/ozgcloud/formcycle/formdata/FormNode.java

...a/de/ozgcloud/formcycle/formdata/FormStructureParser.java

src/main/java/de/ozgcloud/formcycle/formdata/ItemClass.java

...e/ozgcloud/formcycle/formdata/OzgCloudFormDataMapper.java

...de/ozgcloud/formcycle/formdata/PluginFormDataAdapter.java

...de/ozgcloud/formcycle/validation/ConditionalNotEmpty.java

...ud/formcycle/validation/ConditionalNotEmptyValidator.java

src/main/resources/license/eupl_v1_2_de/header.txt

src/main/resources/license/eupl_v1_2_de/license.txt

...ava/de/ozgcloud/formcycle/ExecutionResultTestFactory.java

...d/formcycle/FormCycleConfirmationResponseTestFactory.java