pr-preview.yml @antora fixed version

Author: hanjianqiao

.github/workflows/pr-preview.yml

@@ -109,7 +109,7 @@ jobs:
       - name: Install Antora CLI
         run: |
           echo "Installing Antora packages local..."
-          npm install --global antora@3.1.7  @antora/lunr-extension  @antora/pdf-extension  @node-rs/jieba
+          npm install --global antora@3.1.7 @antora/lunr-extension@3.1.7 @antora/pdf-extension@2.3.x @node-rs/jieba
       
       - name: Install Doc Builder Dependencies
         working-directory: ./ivory-doc-builder