Use manual pages deployment workflow

.github/workflows/pages.yml

@@ -0,0 +1,30 @@
+name: Deploy GitHub Pages
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.2  # Ruby version compatible with Jekyll
+          bundler-cache: true
+
+      - name: Install dependencies and build
+        run: |
+          bundle install
+          bundle exec jekyll build
+
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./_site

Gemfile

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+source "https://rubygems.org"
+gem "jekyll", "~> 4.3"
+gem "jekyll-remote-theme"
+gem "jekyll-seo-tag"
+gem "jekyll-sitemap"