Fix dependency

Gemfile

 source 'http://rubygems.org'
 
-gem "jekyll"
-gem "jekyll-paginate"
-gem "support-for"
-gem "jekyll-sitemap"
+gem "jekyll", "4.2.0"
+gem "jekyll-paginate", "1.1.0"
+gem "jekyll-sitemap", "1.4.0"
+gem "webrick", "1.7.0"

Gemfile.lock

 GEM
   remote: http://rubygems.org/
   specs:
-    addressable (2.7.0)
+    addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.8)
+    concurrent-ruby (1.1.9)
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    ffi (1.15.0)
+    ffi (1.15.4)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (1.8.10)
@@ -41,40 +41,34 @@ GEM
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
-    listen (3.5.1)
+    listen (3.7.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
-    rb-fsevent (0.10.4)
+    rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.5)
-    rouge (3.26.0)
+    rouge (3.26.1)
     safe_yaml (1.0.5)
-    sass (3.7.4)
-      sass-listen (~> 4.0.0)
-    sass-listen (4.0.0)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
     sassc (2.4.0)
       ffi (~> 1.9)
-    support-for (1.0.7)
-      sass (~> 3.3)
     terminal-table (2.0.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
-    unicode-display_width (1.7.0)
+    unicode-display_width (1.8.0)
+    webrick (1.7.0)
 
 PLATFORMS
   x86_64-linux-musl
 
 DEPENDENCIES
-  jekyll
-  jekyll-paginate
-  jekyll-sitemap
-  support-for
+  jekyll (= 4.2.0)
+  jekyll-paginate (= 1.1.0)
+  jekyll-sitemap (= 1.4.0)
+  webrick (= 1.7.0)
 
 BUNDLED WITH
-   2.2.2
+   2.2.24