diff --git a/Gemfile.lock b/Gemfile.lock
index d7c023e..23047da 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,6 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    Ascii85 (2.0.1)
     activemodel (4.2.9)
       activesupport (= 4.2.9)
       builder (~> 3.1)
@@ -9,8 +10,17 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.8)
+      public_suffix (>= 2.0.2, < 8.0)
+    afm (1.0.0)
+    async (2.36.0)
+      console (~> 1.29)
+      fiber-annotation
+      io-event (~> 1.11)
+      metrics (~> 0.12)
+      traces (~> 0.18)
+    benchmark (0.5.0)
+    bigdecimal (3.3.1)
     builder (3.2.4)
     coffee-script (2.4.1)
       coffee-script-source
@@ -20,13 +30,17 @@ GEM
     commonmarker (0.17.13)
       ruby-enum (~> 0.5)
     concurrent-ruby (1.1.8)
+    console (1.34.2)
+      fiber-annotation
+      fiber-local (~> 1.1)
+      json
     dnsruby (1.61.5)
       simpleidn (~> 0.1)
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
-    ethon (0.12.0)
-      ffi (>= 1.3.0)
+    ethon (0.15.0)
+      ffi (>= 1.15.0)
     eventmachine (1.2.7)
     execjs (2.7.0)
     faraday (1.3.0)
@@ -34,7 +48,11 @@ GEM
       multipart-post (>= 1.2, < 3)
       ruby2_keywords
     faraday-net_http (1.0.1)
-    ffi (1.14.2)
+    ffi (1.17.3)
+    fiber-annotation (0.2.0)
+    fiber-local (1.1.0)
+      fiber-storage
+    fiber-storage (1.0.1)
     forwardable-extended (2.6.0)
     front_matter_parser (0.1.1)
     gemoji (3.0.1)
@@ -88,20 +106,24 @@ GEM
       octokit (~> 4.0)
       public_suffix (~> 3.0)
       typhoeus (~> 1.3)
+    hashery (2.1.2)
     html-pipeline (2.14.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    html-proofer (3.18.5)
+    html-proofer (5.2.0)
       addressable (~> 2.3)
-      mercenary (~> 0.3)
-      nokogumbo (~> 2.0)
-      parallel (~> 1.3)
+      async (~> 2.1)
+      benchmark (~> 0.5)
+      nokogiri (~> 1.13)
+      pdf-reader (~> 2.11)
       rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
+      zeitwerk (~> 2.5)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
+    io-event (1.14.2)
     jekyll (3.9.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
@@ -208,6 +230,7 @@ GEM
       gemoji (~> 3.0)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
+    json (2.18.1)
     kramdown (2.3.0)
       rexml
     kramdown-parser-gfm (1.1.0)
@@ -217,27 +240,31 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.5.0)
+    metrics (0.15.0)
+    mini_portile2 (2.8.9)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.14.3)
     multipart-post (2.1.1)
-    nokogiri (1.11.1)
-      mini_portile2 (~> 2.5.0)
+    nokogiri (1.19.0)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogumbo (2.0.4)
-      nokogiri (~> 1.8, >= 1.8.4)
     octokit (4.20.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
-    parallel (1.20.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
+    pdf-reader (2.15.1)
+      Ascii85 (>= 1.0, < 3.0, != 2.0.0)
+      afm (>= 0.2.1, < 2)
+      hashery (~> 2.0)
+      ruby-rc4
+      ttfunk
     public_suffix (3.1.1)
-    racc (1.5.2)
-    rainbow (3.0.0)
+    racc (1.8.1)
+    rainbow (3.1.1)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -245,6 +272,7 @@ GEM
     rouge (3.26.0)
     ruby-enum (0.8.0)
       i18n
+    ruby-rc4 (0.1.5)
     ruby2_keywords (0.0.4)
     rubyzip (2.3.0)
     safe_yaml (1.0.5)
@@ -261,8 +289,11 @@ GEM
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)
-    typhoeus (1.4.0)
-      ethon (>= 0.9.0)
+    traces (0.18.2)
+    ttfunk (1.8.0)
+      bigdecimal (~> 3.1)
+    typhoeus (1.5.0)
+      ethon (>= 0.9.0, < 0.16.0)
     tzinfo (1.2.9)
       thread_safe (~> 0.1)
     unf (0.1.4)
@@ -273,6 +304,7 @@ GEM
     yip_validator (1.1.0)
       activemodel
       front_matter_parser (~> 0.1.1)
+    zeitwerk (2.7.4)
 
 PLATFORMS
   ruby