Ruby 및 의존성 업데이트

- Ruby 2.7.4 -> 3.4.5
- Jekyll Plugin 및 기타 의존성 업데이트
- Bootstrap 4.3.1 -> 5.3.3
- 그 외 의존성 변경에 따른 업데이트
- GitHub Actions deploy workflow 반영 등

Author: 9bow

.github/workflows/deploy-www.yml

@@ -15,15 +15,15 @@ jobs:
     - name: Set up Node.js
       uses: actions/setup-node@v3
       with:
-        node-version: 16.13.2
+        node-version: 22.17.1
     - name: Install node dependencies
       run: |
         npm install -g yarn
         yarn install
-    - name: Set up Ruby 2.7
+    - name: Set up Ruby 3.4
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.7.4
+        ruby-version: 3.4.5
         bundler-cache: true
     - name: Install ruby dependencies
       run: |

.ruby-version

@@ -1 +1 @@
-2.7.4
+3.4.5

Gemfile

@@ -1,12 +1,29 @@
 source "https://rubygems.org"
-ruby "2.7.4"
+ruby "3.4.5"
+
+# Ruby 3.4+ required gems (removed from standard library)
+gem "csv"
+gem "base64"
+gem "bigdecimal"
+
+# Core Jekyll with Ruby 3.4 compatibility - using patched versions
+gem "jekyll", "~> 4.3"
+gem "faraday-retry"
+
+# Sass - using older version to avoid deprecation warnings
+gem "sass-embedded", "~> 1.70.0"
+
+# Web server for local development
+gem "webrick"
 
 group :jekyll_plugins do
-  gem "github-pages", :git => "https://github.com/9bow/pages-gem.git"
   gem "jekyll-paginate-v2"
-  gem "jekyll-autoprefixer"
+  # gem "jekyll-autoprefixer"  # Temporarily disabled for Ruby 3.4 compatibility
   gem "jekyll-github-metadata"
-  gem "execjs", "2.7.0"
+  gem "jekyll-feed"
+  gem "jekyll-sitemap"
+  gem "jekyll-redirect-from"
+  gem "jekyll-seo-tag"
   gem 'tzinfo'
   gem 'tzinfo-data'
 end