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/datetime.html

@@ -12,7 +12,7 @@
   data-ts="{{ include.date | date: '%s' }}"
   data-df="{{ df_dayjs }}"
   {% if include.tooltip %}
-    data-toggle="tooltip" data-placement="bottom"
+    data-bs-toggle="tooltip" data-bs-placement="bottom"
   {% endif %}
 >
   {{ include.date | date: df_strftime }}