Update dependency github-pages to v231

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (7.1.3.2)
+    activesupport (7.1.3.3)
       base64
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.0.2)
@@ -14,7 +14,7 @@ GEM
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
     base64 (0.2.0)
-    bigdecimal (3.1.7)
+    bigdecimal (3.1.8)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -95,7 +95,7 @@ GEM
       activesupport (>= 2)
       nokogiri (>= 1.4)
     http_parser.rb (0.8.0)
-    i18n (1.14.4)
+    i18n (1.14.5)
       concurrent-ruby (~> 1.0)
     jekyll (3.9.5)
       addressable (~> 2.4)
@@ -218,7 +218,7 @@ GEM
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    minitest (5.22.3)
+    minitest (5.23.0)
     mutex_m (0.2.0)
     net-http (0.4.1)
       uri
@@ -251,7 +251,7 @@ GEM
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
-    simpleidn (0.2.1)
+    simpleidn (0.2.2)
       unf (~> 0.1.4)
     strscan (3.1.0)
     terminal-table (1.8.0)