Update changelog

CHANGELOG.md

@@ -34,6 +34,8 @@
 - Updated album carousels, fix height bug ([8380822a](https://github.com/pixelfed/pixelfed/commit/8380822a))
 - Updated MediaController, add timestamp to signed preview url ([49efaae9](https://github.com/pixelfed/pixelfed/commit/49efaae9))
 - Updated BaseApiController, uncache verify_credentials method ([3fa9ac8b](https://github.com/pixelfed/pixelfed/commit/3fa9ac8b))
+- Updated StatusHashtagService, reduce cached hashtag count ttl from 6 hours to 5 minutes ([126886e8](https://github.com/pixelfed/pixelfed/commit/126886e8))
+- Updated Hashtag.vue component, added formatted posts count ([c71f3dd1](https://github.com/pixelfed/pixelfed/commit/c71f3dd1))
 
 ## Deprecated