BG localization, week number is not correct

[Ilchev]

Reduced Test Case

https://github.com/fullcalendar/fullcalendar/blob/main/packages/core/src/locales/bg.ts

Do you understand that if a reduced test case is not provided, we will intentionally delay triaging of your ticket?

• I understand

Which connector are you using (React/Angular/etc)?

Angular

Bug Description

In BG localization, the week number is not correct:

current code is:
week: {
dow: 1, // Monday is the first day of the week.
doy: 7, // The week that contains Jan 1st is the first week of the year.
},

correct should be:
week: {
dow: 1, // Monday is the first day of the week.
doy: 4, // The week that contains Jan 4th is the first week of the year.
},

for for reference
https://www.timeanddate.com/calendar/?year=2023&country=73
"Week numbers: ISO 8601 (week starts Monday) - week 1 is the first week with Thursday."

[arshaw]

released v6.1.10