Drop after x11-toolkits/pango >= 1.51 update

[pango-sys 0.18.0] Package dependency requirement 'pango >= 1.51' could not be satisfied.
[pango-sys 0.18.0] Package 'pango' has version '1.50.14', required version is '>= 1.51'

--- cargo-crates/gtk4-0.8.1/Cargo.toml.orig	1970-01-01 00:00:00 UTC
+++ cargo-crates/gtk4-0.8.1/Cargo.toml
@@ -122,7 +122,7 @@ gnome_45 = [
 gnome_45 = [
     "v4_12",
     "cairo-rs/v1_16",
-    "pango/v1_52",
+    "pango/v1_50",
     "gdk-pixbuf/v2_42",
     "gio/v2_78",
 ]