Update 2023-2024 holidays in Indian calendar

[gbfredrik]

Hi,
Quite a few of these holidays moved around...

Some sources (main page is already linked in the docstring):

• 2024: https://www.nseindia.com/resources/exchange-communication-holidays
• 2023: https://www.nseindia.com/products/content/equities/slbs/mrkt_timing_holidays.htm
• Moving of the Eid-e-Milad holiday 2023: https://www.5paisa.com/news/is-stock-market-closed-on-29th-september-2023-eid-e-milad

Regards,
Fredrik

[gbfredrik]

It appears that testBond fails because it has a moving evaluation date. I'd try rerunning the checks tomorrow, unless anyone wants to take a stab at fixing the test separately :)

[coveralls]

coverage: 72.473% (-0.004%) from 72.477%
when pulling 89d3009 on Model-Validation:india-calendar
into af1e9db on lballabio:master.