remove bundle dependency

Gemfile

@@ -2,7 +2,6 @@
 
 source 'https://rubygems.org'
 
-gem 'html-pipeline', '>= 2.14.2'
 gem 'jekyll', '>= 4.2.2'
 gem 'jekyll-babel'
 gem 'jekyll-last-modified-at'

Gemfile.lock

@@ -17,9 +17,6 @@ GEM
     ffi (1.16.3)
     forwardable-extended (2.6.0)
     google-protobuf (3.25.1)
-    html-pipeline (3.0.1)
-      selma (~> 0.1)
-      zeitwerk (~> 2.5)
     http_parser.rb (0.8.0)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
@@ -71,26 +68,21 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rb_sys (0.9.85)
     rexml (3.2.6)
     rouge (4.2.0)
     safe_yaml (1.0.5)
-    sass-embedded (1.69.6)
-      google-protobuf (~> 3.25)
+    sass-embedded (1.69.5)
+      google-protobuf (~> 3.23)
       rake (>= 13.0.0)
-    selma (0.2.0)
-      rb_sys (~> 0.9)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.5.0)
     webrick (1.8.1)
-    zeitwerk (2.6.12)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  html-pipeline (>= 2.14.2)
   jekyll (>= 4.2.2)
   jekyll-babel
   jekyll-last-modified-at