Bump the dependencies of some gems

- guard-livereload
- haml-rails
- rest-client
- unicorn

Gemfile.lock

@@ -195,7 +195,7 @@ GEM
       http_parser.rb (~> 0.6.0)
     erubi (1.7.0)
     erubis (2.7.0)
-    eventmachine (1.2.1)
+    eventmachine (1.2.5)
     excon (0.60.0)
     execjs (2.7.0)
     factory_bot (4.8.2)
@@ -437,7 +437,7 @@ GEM
       activerecord
       kaminari-core (= 1.1.1)
     kaminari-core (1.1.1)
-    kgio (2.11.1)
+    kgio (2.11.2)
     launchy (2.4.3)
       addressable (~> 2.3)
     leaflet-draw-rails (0.1.0)
@@ -677,7 +677,7 @@ GEM
       rubyzip (~> 1.0)
     sentry-raven (2.7.2)
       faraday (>= 0.7.6, < 1.0)
-    sexp_processor (4.10.0)
+    sexp_processor (4.10.1)
     shellany (0.0.1)
     shoulda-matchers (3.1.2)
       activesupport (>= 4.0.0)
@@ -729,7 +729,7 @@ GEM
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.7.4)
+    unf_ext (0.0.7.5)
     unicode-display_width (1.3.0)
     unicode_utils (1.4.0)
     unicorn (5.4.0)