Update Bootstrap from v4 to v5

app/views/statistics/activity_history.html.slim

@@ -11,13 +11,13 @@
   .spinner
   .graph id="#{resource}-activity-history"
   form
-    .form-group
+    .mb-3
       label for="from-date" = t('.from')
       input type="date" class="form-control" id="from-date" name="from" value=(params[:from] || DateTime.new(2016).to_date)
-    .form-group
+    .mb-3
       label for="to-date" = t('.to')
       input type="date" class="form-control" id="to-date" name="to" value=(params[:to] || DateTime.now.to_date)
-    .form-group
+    .mb-3
       label for="interval" = t('.interval')
       select class="form-control" id="interval" name="interval"
         = [:year, :quarter, :month, :day, :hour, :minute, :second].each do | key |