Update devDependencies and gems

Gemfile.lock

@@ -10,23 +10,23 @@ GEM
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
-    ffi (1.12.2)
-    ffi (1.12.2-x64-mingw32)
+    ffi (1.13.0)
+    ffi (1.13.0-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (1.8.2)
       concurrent-ruby (~> 1.0)
-    jekyll (4.0.1)
+    jekyll (4.1.0)
       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)
@@ -50,7 +50,7 @@ GEM
     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)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
@@ -63,11 +63,11 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
-    rouge (3.18.0)
+    rouge (3.19.0)
     safe_yaml (1.0.5)
-    sassc (2.3.0)
+    sassc (2.4.0)
       ffi (~> 1.9)
-    sassc (2.3.0-x64-mingw32)
+    sassc (2.4.0-x64-mingw32)
       ffi (~> 1.9)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
@@ -79,7 +79,7 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (~> 4.0.1)
+  jekyll (~> 4.1.0)
   jekyll-redirect-from (~> 0.16.0)
   jekyll-sitemap (~> 1.4.0)
   jekyll-toc (~> 0.14.0)