MM/DD/YYYY date format on Gitcoin website is confusing for international users

### Discussion

For most of the world, DDMMYYYY is the preferred date format, however, Gitcoin uses MMDDYYYY, a very US-centric format, [only used in a handful of countries](https://en.wikipedia.org/wiki/Date_format_by_country).

I believe we need a better solution for date formats, either using an unambiguous format like YYYYMMDD or checking the user locale settings and changing the date format accordingly for every user.