Bump addressable from 2.5.2 to 2.8.1

Gemfile.lock

@@ -1,11 +1,13 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
-    faraday (0.13.1)
-      multipart-post (>= 1.2, < 3)
+    faraday (2.6.0)
+      faraday-net_http (>= 2.0, < 3.1)
+      ruby2_keywords (>= 0.0.4)
+    faraday-net_http (3.0.0)
     ffi (1.9.18)
     ffi (1.9.18-x64-mingw32)
     forwardable-extended (2.6.0)
@@ -47,25 +49,26 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
     mini_magick (4.9.4)
-    multipart-post (2.0.0)
-    octokit (4.7.0)
-      sawyer (~> 0.8.0, >= 0.5.3)
+    octokit (4.25.1)
+      faraday (>= 1, < 3)
+      sawyer (~> 0.9)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.0)
+    public_suffix (5.0.0)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
     rouge (1.11.1)
+    ruby2_keywords (0.0.5)
     safe_yaml (1.0.4)
     sass (3.5.1)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sawyer (0.8.1)
-      addressable (>= 2.3.5, < 2.6)
-      faraday (~> 0.8, < 1.0)
+    sawyer (0.9.2)
+      addressable (>= 2.3.5)
+      faraday (>= 0.17.3, < 3)
     subexec (0.2.3)
     thread_safe (0.3.6)
     tzinfo (1.2.3)