Updated GroupDocs.Viewer for Java to v25.2

Updated GroupDocs.Viewer for Java to v24.12

Merge remote-tracking branch 'origin/master'

Updated GroupDocs.Viewer for Java to v24.8

Updated GroupDocs.Viewer for Java to v24.6

Updated GroupDocs.Viewer for Java to v24.4

Updated GroupDocs.Viewer for Java to v24.2

Moved files to the directory where they are in GroupDocs.Total samples

Updated Gradle wrapper

Additional fixes for GroupDocs.Viewer v23.4