Bump default gems

- aasm (4.12.3 → 5.0.0)
- apipie-rails (0.5.9 → 0.5.10)
- uglifier (4.1.15 → 4.1.17)
- unicorn (5.4.0 → 5.4.1)

Gemfile.lock

@@ -19,7 +19,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     CFPropertyList (2.3.6)
-    aasm (4.12.3)
+    aasm (5.0.0)
       concurrent-ruby (~> 1.0)
     actioncable (5.2.0)
       actionpack (= 5.2.0)
@@ -88,7 +88,7 @@ GEM
       sass-rails (~> 5.0)
       selectize-rails (~> 0.6)
     aes_key_wrap (1.0.1)
-    apipie-rails (0.5.9)
+    apipie-rails (0.5.10)
       rails (>= 4.1)
     arel (9.0.0)
     ast (2.4.0)
@@ -567,7 +567,7 @@ GEM
       rack
     rack-proxy (0.6.4)
       rack
-    rack-test (1.0.0)
+    rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.0)
       actioncable (= 5.2.0)
@@ -754,13 +754,13 @@ GEM
       ethon (>= 0.9.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (4.1.15)
+    uglifier (4.1.17)
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.5)
     unicode-display_width (1.4.0)
-    unicorn (5.4.0)
+    unicorn (5.4.1)
       kgio (~> 2.6)
       raindrops (~> 0.7)
     validate_email (0.1.6)