diff --git a/Gemfile.lock b/Gemfile.lock
index f68bc0b..a9d698f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,14 +1,20 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    Ascii85 (1.1.0)
     activesupport (6.0.4.4)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
+    afm (0.2.2)
+    async (2.3.1)
+      console (~> 1.10)
+      io-event (~> 1.1)
+      timers (~> 4.1)
     chef-utils (17.0.242)
       concurrent-ruby
     coffee-script (2.4.1)
@@ -19,12 +25,14 @@ GEM
     commonmarker (0.17.13)
       ruby-enum (~> 0.5)
     concurrent-ruby (1.1.9)
+    console (1.16.2)
+      fiber-local
     dnsruby (1.61.7)
       simpleidn (~> 0.1)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
-    ethon (0.15.0)
+    ethon (0.16.0)
       ffi (>= 1.15.0)
     eventmachine (1.2.7)
     execjs (2.8.1)
@@ -47,7 +55,8 @@ GEM
     faraday-net_http_persistent (1.2.0)
     faraday-patron (1.0.0)
     faraday-rack (1.0.0)
-    ffi (1.15.4)
+    ffi (1.15.5)
+    fiber-local (1.0.0)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
     github-pages (223)
@@ -101,20 +110,23 @@ GEM
       octokit (~> 4.0)
       public_suffix (>= 3.0, < 5.0)
       typhoeus (~> 1.3)
+    hashery (2.1.2)
     html-pipeline (2.14.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    html-proofer (3.19.3)
+    html-proofer (5.0.4)
       addressable (~> 2.3)
-      mercenary (~> 0.3)
-      nokogiri (~> 1.12)
-      parallel (~> 1.3)
+      async (~> 2.1)
+      nokogiri (~> 1.13)
+      pdf-reader (~> 2.11)
       rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
+      zeitwerk (~> 2.5)
     http_parser.rb (0.8.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
+    io-event (1.1.6)
     jekyll (3.9.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
@@ -238,7 +250,7 @@ GEM
       mixlib-config (>= 2.2.1, < 4)
       mixlib-shellout
     mercenary (0.3.6)
-    mini_portile2 (2.6.1)
+    mini_portile2 (2.8.1)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
@@ -250,18 +262,23 @@ GEM
     mixlib-shellout (3.2.5)
       chef-utils
     multipart-post (2.1.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
+    nokogiri (1.14.1)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     octokit (4.21.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
-    parallel (1.21.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.6)
-    racc (1.6.0)
-    rainbow (3.0.0)
+    pdf-reader (2.11.0)
+      Ascii85 (~> 1.0)
+      afm (~> 0.2.1)
+      hashery (~> 2.0)
+      ruby-rc4
+      ttfunk
+    public_suffix (4.0.7)
+    racc (1.6.2)
+    rainbow (3.1.1)
     rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -269,6 +286,7 @@ GEM
     rouge (3.26.0)
     ruby-enum (0.9.0)
       i18n
+    ruby-rc4 (0.1.5)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)
@@ -285,7 +303,9 @@ GEM
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)
+    timers (4.3.5)
     tomlrb (2.0.1)
+    ttfunk (1.7.0)
     typhoeus (1.4.0)
       ethon (>= 0.9.0)
     tzinfo (1.2.9)