updated plugins and dependencies

Gemfile.lock

@@ -15,15 +15,15 @@ GEM
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
-    ethon (0.12.0)
-      ffi (>= 1.3.0)
+    ethon (0.13.0)
+      ffi (>= 1.15.0)
     eventmachine (1.2.7)
     ffi (1.15.0)
     forwardable-extended (2.6.0)
     html-pipeline (2.14.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    html-proofer (3.18.8)
+    html-proofer (3.19.0)
       addressable (~> 2.3)
       mercenary (~> 0.3)
       nokogumbo (~> 2.0)
@@ -32,7 +32,7 @@ GEM
       typhoeus (~> 1.3)
       yell (~> 2.0)
     http_parser.rb (0.6.0)
-    i18n (1.8.9)
+    i18n (1.8.10)
       concurrent-ruby (~> 1.0)
     jekyll (4.2.0)
       addressable (~> 2.4)
@@ -88,14 +88,14 @@ GEM
     liquid (4.0.3)
     liquid-c (4.0.0)
       liquid (>= 3.0.0)
-    listen (3.5.0)
+    listen (3.5.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
     method_source (1.0.0)
     mini_portile2 (2.5.0)
     minitest (5.14.4)
-    nokogiri (1.11.2)
+    nokogiri (1.11.3)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     nokogumbo (2.0.5)
@@ -104,7 +104,7 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     posix-spawn (0.3.15)
-    pry (0.14.0)
+    pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.6)
@@ -115,7 +115,7 @@ GEM
       ffi (~> 1.0)
     rb-readline (0.5.5)
     redcarpet (3.5.1)
-    rexml (3.2.4)
+    rexml (3.2.5)
     rouge (3.26.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
@@ -154,4 +154,4 @@ DEPENDENCIES
   webrick
 
 BUNDLED WITH
-   2.2.3
+   2.2.15