[FIXES JENKINS-42371] - Update remoting from 3.5 to 3.7 (#2773)

* [FIXES JENKINS-42371] - Update remoting to 3.6

Fixed issues:

* [JENKINS-42371](https://issues.jenkins-ci.org/browse/JENKINS-42371) - Properly close the `URLConnection` when parsing connection arguments from the JNLP file. It was causing a descriptor leak in the case of multiple connection attempts. ([PR #152](https://github.com/jenkinsci/remoting/pull/152))

* Remoting 3.6 has been burned

(cherry picked from commit b6e4fb4b)