fix missing import of timeWeek which would cause errors in prometheus graphs with deployments

app/assets/javascripts/monitoring/utils/date_time_formatters.js

 import { timeFormat as time } from 'd3-time-format';
-import { timeSecond, timeMinute, timeHour, timeDay, timeMonth, timeYear } from 'd3-time';
+import { timeSecond, timeMinute, timeHour, timeDay, timeWeek, timeMonth, timeYear } from 'd3-time';
 import { bisector } from 'd3-array';
 
-const d3 = { time, bisector, timeSecond, timeMinute, timeHour, timeDay, timeMonth, timeYear };
+const d3 = {
+  time,
+  bisector,
+  timeSecond,
+  timeMinute,
+  timeHour,
+  timeDay,
+  timeWeek,
+  timeMonth,
+  timeYear,
+};
 
 export const dateFormat = d3.time('%b %-d, %Y');
 export const timeFormat = d3.time('%-I:%M%p');