glib-2.0: upgrade 2.74.1 -> 2.74.3

Changelog:
===========
* Fix regression in type checking 'g_str_equal()' from C++ projects (#2820)

* Bugs fixed:
  - #2820 g_str_equal: New macro version breaks compilation in C++ projects
  - !3096 Backport !3094 "gstrfuncs: Fix regression in C++ types accepted by
    g_str_equal()" to glib-2-74

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>