chore: bump version to 5.5.1 and update dependencies

- Upgrade version from 5.5.0 to 5.5.1
- Update third-party dependencies: algolia, disqusjs, docsearch, fancybox, fontawesome, mermaid
- Replace Twitter with X in share configurations
- Enable CDN version numbers by default
- Fix shuoshuo page JSON security with safeJSON helper
- Improve image lazy loading regex to handle minified HTML
- Fix search result HTML structure and styling
- Add margin-top to search result numbering for better alignment

scripts/common/default_config.js

@@ -290,10 +290,10 @@ module.exports = {
   share: {
     use: 'sharejs',
     sharejs: {
-      sites: 'facebook,twitter,wechat,weibo,qq'
+      sites: 'facebook,x,wechat,weibo,qq'
     },
     addtoany: {
-      item: 'facebook,twitter,wechat,sina_weibo,facebook_messenger,email,copy_link'
+      item: 'facebook,x,wechat,sina_weibo,facebook_messenger,email,copy_link'
     }
   },
   comments: {
@@ -591,7 +591,7 @@ module.exports = {
   CDN: {
     internal_provider: 'local',
     third_party_provider: 'jsdelivr',
-    version: false,
+    version: true,
     custom_format: null,
     option: null
   }