Specs: Disable the correct test on JRuby (#927)
Specs: Disable the correct test on JRuby (#927)

- perhaps things have changed since the pending() was added
  - the one test does not fail
  - ...and it neighbour does
  - so, this change moves the Pending marker - which is now called #skip()
  - this last thing gets rid of a deprecation warning which was output
in all test runs for JRuby
savonrb/savon