fix: update CDN cache duration in setCommonHeaders function

Author: max-ostapenko

src/index.js

@@ -67,8 +67,8 @@ const setCORSHeaders = (res) => {
 const setCommonHeaders = (res) => {
   setCORSHeaders(res);
   res.setHeader('Content-Type', 'application/json');
-  // Browser cache: 1 hour, CDN cache: 30 days
-  res.setHeader('Cache-Control', 'public, max-age=3600, s-maxage=2592000');
+  // Browser cache: 1 hour, CDN cache: 1 day
+  res.setHeader('Cache-Control', 'public, max-age=3600, s-maxage=86400');
   res.setHeader('Cloud-CDN-Cache-Tag', 'report-api');
   res.setHeader('Timing-Allow-Origin', '*');
 };