fix: Gemfile & Gemfile.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-REXML-7577227
- https://snyk.io/vuln/SNYK-RUBY-REXML-7577228

Gemfile

@@ -8,7 +8,7 @@ ruby RUBY_VERSION
 #     bundle exec jekyll serve
 #
 
-gem "jekyll", "4.2.2"
+gem "jekyll", "4.3.0"
 
 # Fix development command "jekyll serve"
 # Can be removed when upgrading to Jekyll 4.3

Gemfile.lock

@@ -1,41 +1,43 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.6)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
     colorator (1.1.0)
-    concurrent-ruby (1.2.3)
+    concurrent-ruby (1.3.3)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
     eventmachine (1.2.7)
-    ffi (1.16.3)
+    ffi (1.17.0)
     forwardable-extended (2.6.0)
+    google-protobuf (3.25.4)
     http_parser.rb (0.8.0)
     i18n (1.14.5)
       concurrent-ruby (~> 1.0)
-    jekyll (4.2.2)
+    jekyll (4.3.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
       i18n (~> 1.0)
-      jekyll-sass-converter (~> 2.0)
+      jekyll-sass-converter (>= 2.0, < 4.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 2.3)
+      kramdown (~> 2.3, >= 2.3.1)
       kramdown-parser-gfm (~> 1.0)
       liquid (~> 4.0)
-      mercenary (~> 0.4.0)
+      mercenary (>= 0.3.6, < 0.5)
       pathutil (~> 0.9)
-      rouge (~> 3.0)
+      rouge (>= 3.0, < 5.0)
       safe_yaml (~> 1.0)
-      terminal-table (~> 2.0)
+      terminal-table (>= 1.8, < 4.0)
+      webrick (~> 1.7)
     jekyll-feed (0.17.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-paginate (1.1.0)
     jekyll-redirect-from (0.16.0)
       jekyll (>= 3.3, < 5.0)
-    jekyll-sass-converter (2.2.0)
-      sassc (> 2.0.1, < 3.0)
+    jekyll-sass-converter (3.0.0)
+      sass-embedded (~> 1.54)
     jekyll-seo-tag (2.8.0)
       jekyll (>= 3.8, < 5.0)
     jekyll-watch (2.2.1)
@@ -55,35 +57,37 @@ GEM
       jekyll-seo-tag (~> 2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (5.0.5)
+    public_suffix (5.1.1)
+    rake (13.2.1)
     rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
+    rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
-    rouge (3.30.0)
+    rexml (3.3.4)
+      strscan
+    rouge (4.3.0)
     safe_yaml (1.0.5)
-    sassc (2.4.0)
-      ffi (~> 1.9)
+    sass-embedded (1.63.6)
+      google-protobuf (~> 3.23)
+      rake (>= 13.0.0)
     strscan (3.1.0)
-    terminal-table (2.0.0)
-      unicode-display_width (~> 1.1, >= 1.1.1)
-    unicode-display_width (1.8.0)
+    terminal-table (3.0.2)
+      unicode-display_width (>= 1.1.1, < 3)
+    unicode-display_width (2.5.0)
     webrick (1.8.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (= 4.2.2)
+  jekyll (= 4.3.0)
   jekyll-feed (~> 0.16, >= 0.16.0)
   jekyll-paginate
   jekyll-redirect-from
   minima (~> 2.5, >= 2.5.1)
   webrick (~> 1.8)
 
 RUBY VERSION
-   ruby 3.0.2p107
+   ruby 2.7.8p225
 
 BUNDLED WITH
    2.1.4