Log Message:
glib2: update to 2.62.3.

Overview of changes in GLib 2.62.3
==================================

* Use `poll()` in `g_spawn_sync()` rather than `select()`, which is subject to
  FD limits (#954)

* Fix undefined behaviour with `g_utf8_find_prev_char()` (#1917)

* Bugs fixed:
 - #954 The g_spawn_sync() function uses select() which has limitations
 - #1318 rare failure in gdbus-peer test: invalid uninstantiatable type '(null)' \ 
in cast to 'GDBusServer'
 - #1897 glib 2.62.0 fails test 'test_writev_no_vectors' wih gcc7
 - #1903 use-after-free in mimeapps test causes intermittent segfault during testing
 - #1916 objcopy not used from cross-compilation file in GIO tests
 - #1917 Test utf8-pointer fails with static build, LTO, optimisations, and new GCC
 - !1174 Backport !1164 “use-after-free fix in mimeapps test” to glib-2-62
 - !1184 Backport !1173 “gvariant: Limit recursion in g_variant_parse()” to \ 
glib-2-62
 - !1194 Backport !1176, !1183, !1188, !1191 to `glib-2-62`
 - !1203 Backport !1192, !1193, !1197 Fixes for gdbus-peer tests to glib-2-62
 - !1207 Backport !1206 “goption: Relax assertion to avoid being broken by \ 
kdeinit5” to glib-2-62
 - !1215 [2.62] gdbus-peer: Specifically listen on 127.0.0.1
 - !1219 Backport !1218 “gdb: Fix GHashTable pretty printer off-by-one error”
 - !1222 Backport !1221 “Add NOTE_REVOKE to the list of the monitoring \ 
events” to glib-2-62
 - !1228 Backport !1199 “gunicode: Fix UB in gutf8.c and utf8-pointer test” \ 
to glib-2-62