Update skeptic dependencies

This is an attempt to fix errors produced by rake assets:precompile
during deployment:

  * executing "cd /data/rails/evans-2014/releases/20150827065008 &&
  * bundle exec rake assets:precompile"
    servers: ["2014.fmi.ruby.bg"]
    [2014.fmi.ruby.bg] executing command
*** [err :: 2014.fmi.ruby.bg] /data/rails/evans-2014/shared/bundle/ruby/2.2.0/gems/activesupport-4.0.3/lib/active_support/values/time_zone.rb:282: warning: circular argument reference - now
*** [err :: 2014.fmi.ruby.bg] rake aborted!
*** [err :: 2014.fmi.ruby.bg] Could not open library 'aspell': /usr/lib/aspell: cannot read file data: Is a directory.
*** [err :: 2014.fmi.ruby.bg] Could not open library 'libaspell.so': libaspell.so: cannot open shared object file: No such file or directory

Gemfile.lock

@@ -111,8 +111,8 @@ GEM
       railties (>= 3.0.0)
     faker (1.2.0)
       i18n (~> 0.5)
-    ffi (1.9.6)
-    ffi-aspell (1.0.0)
+    ffi (1.9.10)
+    ffi-aspell (1.1.0)
       ffi
     formatador (0.2.4)
     gherkin (2.11.8)
@@ -296,7 +296,7 @@ GEM
     treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
-    trollop (2.0)
+    trollop (2.1.2)
     turbo-sprockets-rails3 (0.2.9)
       railties (>= 3.1.0)
       sprockets (>= 2.0.0)