- Update to version 74.2
* For changes see https://icu.unicode.org/download/74
- Add patch
* icu4c-74_2-add-lib-prefix-to-dll.patch
* icu4c-74_2-fix-pc-files.patch
- Drop patch:
* icu4c-61_2-add-lib-prefix-to-dll.patch
* icu4c-61_2-fix-pc-files.patch
- Fix mingw32-libicu74.noarch: W: obsolete-not-provided mingw32-libicu