Update -sys dependency versions

Author: sdroege

Cargo.toml

@@ -58,13 +58,13 @@ libc = "0.2"
 pango-sys = {git = "https://github.com/gtk-rs/gtk-rs-core", version = "0.20", branch = "0.20", features = ["v1_46"]}
 pango = {git = "https://github.com/gtk-rs/gtk-rs-core", version = "0.20", branch = "0.20", features = ["v1_46"]}
 gir-format-check = "^0.1"
-gdk4-x11-sys = {path = "gdk4-x11/sys", version = "0.9"}
-gdk4-wayland-sys = {path = "gdk4-wayland/sys", version = "0.9"}
-gdk4-win32-sys = {path = "gdk4-win32/sys", version = "0.9"}
-gdk4-sys = {path = "gdk4/sys", version = "0.9"}
+gdk4-x11-sys = {path = "gdk4-x11/sys", version = "0.9.4"}
+gdk4-wayland-sys = {path = "gdk4-wayland/sys", version = "0.9.4"}
+gdk4-win32-sys = {path = "gdk4-win32/sys", version = "0.9.4"}
+gdk4-sys = {path = "gdk4/sys", version = "0.9.4"}
 gdk = {package = "gdk4", path = "gdk4", version = "0.9"}
-gsk4-sys = {path = "gsk4/sys", version = "0.9"}
+gsk4-sys = {path = "gsk4/sys", version = "0.9.4"}
 gsk = {package = "gsk4", path = "gsk4", version = "0.9"}
 gtk4-macros = {path = "gtk4-macros", version = "0.9"}
-gtk4-sys = {path = "gtk4/sys", version = "0.9"}
+gtk4-sys = {path = "gtk4/sys", version = "0.9.4"}
 gtk = { path = "gtk4", package = "gtk4", version = "0.9" }