Update gem bundle (#2537)

Removes warnings for Ruby 2.7 about deprecated usage of keyword arguments.

The generated site does not change except for minor modifications in
the syntax highlighting.

Author: stomar

Gemfile.lock

@@ -4,100 +4,106 @@ GEM
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.5)
-    crass (1.0.5)
-    em-websocket (0.5.1)
+    concurrent-ruby (1.1.7)
+    crass (1.0.6)
+    em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    ffi (1.11.1)
+    ffi (1.13.1)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
-    i18n (1.7.0)
+    i18n (1.8.5)
       concurrent-ruby (~> 1.0)
-    jekyll (4.0.0)
+    jekyll (4.1.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
-      i18n (>= 0.9.5, < 2)
+      i18n (~> 1.0)
       jekyll-sass-converter (~> 2.0)
       jekyll-watch (~> 2.0)
       kramdown (~> 2.1)
       kramdown-parser-gfm (~> 1.0)
       liquid (~> 4.0)
-      mercenary (~> 0.3.3)
+      mercenary (~> 0.4.0)
       pathutil (~> 0.9)
       rouge (~> 3.0)
       safe_yaml (~> 1.0)
       terminal-table (~> 1.8)
-    jekyll-sass-converter (2.0.1)
+    jekyll-sass-converter (2.1.0)
       sassc (> 2.0.1, < 3.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     json (2.3.1)
-    kgio (2.11.2)
+    kgio (2.11.3)
     kramdown (2.3.0)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
-    lanyon (0.4.1)
+    lanyon (0.4.2)
       jekyll (>= 2.0)
       rack (>= 1.6, < 3.0)
-    libsqreen (0.3.0.0.3)
+    libsqreen (0.6.1.0.1)
     liquid (4.0.3)
-    listen (3.2.0)
+    listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    mercenary (0.3.6)
+    mercenary (0.4.0)
     mini_portile2 (2.4.0)
-    minitest (5.13.0)
-    nokogiri (1.10.8)
+    minitest (5.14.2)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
-    paint (2.1.1)
+    paint (2.2.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.1)
+    public_suffix (4.0.6)
     rack (2.2.3)
-    rack-protection (2.0.7)
+    rack-protection (2.1.0)
       rack
     rack-rewrite (1.5.1)
     rack-ssl (1.4.1)
       rack
-    raindrops (0.19.0)
-    rake (13.0.0)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    raindrops (0.19.1)
+    rake (13.0.1)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
-    rouge (3.12.0)
+    rouge (3.24.0)
     safe_yaml (1.0.5)
-    sassc (2.2.1)
+    sassc (2.4.0)
       ffi (~> 1.9)
-    slop (4.7.0)
+    slop (4.8.2)
     spidr (0.6.1)
       nokogiri (~> 1.3)
-    sq_mini_racer (0.2.5.0.1.beta2)
-    sqreen (1.18.1)
-      libsqreen (~> 0.3.0.0)
+    sq_mini_racer (0.2.5.0.1.beta3)
+    sqreen (1.21.1)
+      libsqreen (~> 0.6.1.0.0)
       sq_mini_racer (~> 0.2.4.sqreen2)
+      sqreen-backport (~> 0.1.0)
+      sqreen-kit (~> 0.2.2)
+    sqreen-backport (0.1.0)
+    sqreen-kit (0.2.2)
+      sqreen-backport (~> 0.1.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
-    tidy_ffi (1.0.0)
+    tidy_ffi (1.0.1)
       ffi (~> 1.2)
-    unicode-display_width (1.6.0)
-    unicorn (5.5.1)
+    unicode-display_width (1.7.0)
+    unicorn (5.7.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
-    validate-website (1.9.3)
+    validate-website (1.10.0)
       crass (~> 1)
       paint (~> 2)
       slop (~> 4.6)
       spidr (~> 0.6)
       tidy_ffi (~> 1.0)
       w3c_validators (~> 1.3)
-    w3c_validators (1.3.4)
+    w3c_validators (1.3.6)
       json (>= 1.8)
       nokogiri (~> 1.6)
+      rexml (~> 3.2)
 
 PLATFORMS
   ruby
@@ -116,8 +122,5 @@ DEPENDENCIES
   unicorn
   validate-website (~> 1.6)
 
-RUBY VERSION
-   ruby 2.7.0p0
-
 BUNDLED WITH
-   2.0.2
+   2.1.2