Replace node-sass with sass and update bootstrap to version 5.3

src/Bundle/ChillCalendarBundle/Resources/public/vuejs/MyCalendarRange/App2.vue

@@ -97,7 +97,7 @@
     </div>
     <FullCalendar :options="calendarOptions" ref="calendarRef">
         <template v-slot:eventContent="{ event }">
-            <span :class="eventClasses(event)">
+            <span :class="eventClasses">
                 <b v-if="event.extendedProps.is === 'remote'">{{
                     event.title
                 }}</b>
@@ -349,11 +349,8 @@ const pickedLocation = computed<Location | null>({
 
 /**
  * return the show classes for the event
- * @param arg
  */
-const eventClasses = function (): object {
-    return { calendarRangeItems: true };
-};
+const eventClasses = { calendarRangeItems: true };
 
 /*
 // currently, all events are stored into calendarRanges, due to reactivity bug