src/main/java: Add Javadoc tags to FixJpgJpgThumbnails.java

I'm not sure how these are used by anything other than Javadoc, but
it seems useful.

src/main/java/io/github/ilri/cgspace/scripts/FixJpgJpgThumbnails.java

@@ -13,6 +13,8 @@ import java.sql.SQLException;
 /**
  * @author Andrea Schweer schweer@waikato.ac.nz for the LCoNZ Institutional Research Repositories
  * @author Alan Orth for the International Livestock Research Institute
+ * @version 5.1-SNAPSHOT
+ * @since 5.1-SNAPSHOT
  */
 public class FixJpgJpgThumbnails {