Upgrade to JasperReportsLibraries 6.18.1

[daust]

On May 11th the new version was released:

https://community.jaspersoft.com/project/jasperreports-library/releases

Changes:

• refactored PDF exporter to extract the iText code from it and leave only common functionality that allows switching between the default iText 2 based exporter implementation and the pluggable iText 7 exporter implementation, which is available as separate open source project at: https://github.com/Jaspersoft/jasperreports-pdf-lib7
• various dependencies upgrades including Groovy 3.0.7, HttpClient 4.5.13, Hibernate 5.4.24.Final, Dom4j 2.1.3, Apache Log4j 2.14.0, Jackson 2.12.2, Velocity 2.3, Batik 1.14, XmlGraphics Commons 2.6, Apache Ant 1.10.9;
• minor bug fixes and improvements;

https://github.com/TIBCOSoftware/jasperreports/releases/tag/6.17.0 https://sourceforge.net/projects/jasperreports/

[daust]

In the meantime, 6.18.0 and 6.18.1 have been released. Thus, will upgrade to 6.18.1.

[daust]

Upgraded to 6.18.1. Also replaced the included log4j-2.14.0 libraries with log4j-2.17.1