Dependency on servlet-api updated to version 6, grizzly to 4

[dmatej]

Depends on Grizzly snapshot, that is why it is just a draft.

[jansupol]

I wonder whether you can drop the Servlet 5 dependencies for the Jetty tests.

[dmatej]

I wonder whether you can drop the Servlet 5 dependencies for the Jetty tests.

I had the same question, but as the build uses just the server as it is and uses jetty client, both 11.0.7, it passed all tests to my surprise. But I still need to rerun everything once more, now I'm back on Glassfish using this branch as in GF's branch I enabled some tests and 2 of them which failed, which caused this avalanche of updates.

Jersey tests did not pass with servlet5, when I updated just grizzly dependency.