Update dependency jekyll to v4.3.4

Gemfile.lock

@@ -2,16 +2,16 @@ GEM
   remote: https://rubygems.org/
   specs:
     Ascii85 (1.1.0)
-    addressable (2.8.6)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
     afm (0.2.2)
     async (2.6.5)
       console (~> 1.10)
       fiber-annotation
       io-event (~> 1.1)
       timers (~> 4.1)
     colorator (1.1.0)
-    concurrent-ruby (1.2.2)
+    concurrent-ruby (1.2.3)
     console (1.23.7)
       fiber-annotation
       fiber-local
@@ -38,10 +38,10 @@ GEM
       yell (~> 2.0)
       zeitwerk (~> 2.5)
     http_parser.rb (0.8.0)
-    i18n (1.14.1)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
     io-event (1.4.4)
-    jekyll (4.3.3)
+    jekyll (4.3.4)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -89,14 +89,16 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.6)
+    rexml (3.2.9)
+      strscan
     rouge (3.30.0)
     ruby-rc4 (0.1.5)
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)
     sassc (2.4.0-x64-mingw32)
       ffi (~> 1.9)
+    strscan (3.1.0)
     terminal-table (2.0.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     timers (4.3.5)