feat: upgrade dependencies to use Java 17 and jakarta

[deniszmihaj]

I upgraded some Dependencies to be able to build and run this Application with Java 17 and Jakarta Classes.

[pie-ai]

As a heavy user of the validator, we embed the jar as a dependency. As the infrastructure partly runs on a java 11 stack, these code changes would make it impossible to ship it the current way. It would be great to have multiple target runtimes with that switch the jakarta/javax dependencies and different target java versions instead of replacing the current one.

[deniszmihaj]

Are you using Version 1.5.0 normaly?

[pie-ai]

Sorry, I was totally confused by all the components of eforms. We are not using it, no issue with that!

[xxxyyyz]

@deniszmihaj would you mind updating the configuration of maven-resource-plugin according to #163, i.e. setting the propertiesEncoding to ISO-8859-1?

I'm planning to base our local build on your branch, so it would be helpful if maven build runs without any further modification.

Thanks!

[rkottmann]

We will merge it for a 1.6.x release.