refactor(deps): upgrade bootstrap from v4.6 to v5.2

- update class name of the spacing, font style, cards and toasts
- update attribute names &  tooltip usage
- remove custom smooth scroll
- syntax colors

_includes/search-loader.html

@@ -4,7 +4,7 @@
 -->
 
 {% capture result_elem %}
-<div class="pl-1 pr-1 pl-sm-2 pr-sm-2 pl-lg-4 pr-lg-4 pl-xl-0 pr-xl-0">
+<div class="px-1 px-sm-2 px-lg-4 px-xl-0">
   <a href="{url}">{title}</a>
   <div class="post-meta d-flex flex-column flex-sm-row text-muted mt-1 mb-1">
     {categories}
@@ -19,6 +19,7 @@
 <script src="{{ site.data.assets[origin].search.js | relative_url }}"></script>
 
 <script>
+  
 SimpleJekyllSearch({
   searchInput: document.getElementById('search-input'),
   resultsContainer: document.getElementById('search-results'),
@@ -30,7 +31,7 @@ SimpleJekyllSearch({
       if (value === '') {
         return `${value}`;
       } else {
-        return `<div class="mr-sm-4"><i class="far fa-folder fa-fw"></i>${value}</div>`;
+        return `<div class="me-sm-4"><i class="far fa-folder fa-fw"></i>${value}</div>`;
       }
     }
 
@@ -43,4 +44,5 @@ SimpleJekyllSearch({
     }
   }
 });
+
 </script>