Update Branding Calendar for 2025

[base-13]

The following events' date should be updated:

Event	New Date
Holi	13 - 14/03
Easter	20/04
Eid-ul-Fitar	31/03
Diwali	20 - 21/10

Note: The given dates are exact dates
since we don't use exact date instead we extend the durations of events, so that should be done by team members and domain leads.

All the dates are picked up from Google Calendar.

[ChrisLovering]

Raised a PR for this, from what I could find, Eid-ul-Fitar lands March 30/31, rather than April 11.

I also had to put Holi in for a day early to avoid conflict with pi-day. March & April will be a fun 2 months for our branding!

[base-13]

what I could find, Eid-ul-Fitar lands March 30/31, rather than April 11.

yeah actually I copied my last year's format #204 and forgot to edit date for eid