⬆️ Update docs workflow from upstream

Problem:
- The documentation building workflow changed upstream.

Solution:
- Update it.

Author: elbeno

.github/workflows/asciidoctor-ghpages.yml

@@ -38,17 +38,12 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
-          node-version: 20
+          node-version: 22
 
-      - name: Install Mermaid
+      - name: Install Asciidoctor & Mermaid
         run: |
           npm install -g @mermaid-js/[email protected]
           npx puppeteer browsers install chrome-headless-shell
-
-      - name: Install asciidoctor
-        run: |
-          sudo apt update
-          sudo apt install -y asciidoctor
           sudo gem install asciidoctor asciidoctor-diagram rouge
 
       - name: Restore CPM cache

.gitignore

@@ -3,7 +3,7 @@ build/
 /venv
 /.vscode
 /.idea
-.cache/
+/.cache
 /.DS_Store
 .clang-format
 .clang-tidy