Cargo.*: use xkbcommon v0.5 for "newer" builds

Debian now provides `rust-xkbcommon` v0.5, so let's use this as the
base version for our use-case.

Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/620>

Cargo.deps

@@ -5,6 +5,7 @@ zbus = "1.0.*"
 zvariant = "2.0.*"
 # Newer versions seem to confuse the version of Cargo on Debian Bullseye
 zvariant_derive = "2.0.*"
+xkbcommon = { version = "0.4.*", features = ["wayland"] }
 
 [dependencies.cairo-rs]
 version = "0.7.*"

Cargo.deps.newer

@@ -7,6 +7,7 @@ zbus = "1.9.*"
 zvariant = "2.10.*"
 # Newer versions seem to confuse the version of Cargo on Debian Bullseye
 zvariant_derive = "2.10.*"
+xkbcommon = { version = "0.5.*", features = ["wayland"] }
 
 [dependencies.cairo-rs]
 version = "0.18.*"

Cargo.toml.in

@@ -31,5 +31,4 @@ clap_v4 = []
 maplit = "1.0.*"
 serde = { version = "1.0.*", features = ["derive"] }
 serde_yaml = "0.8.*"
-xkbcommon = { version = "0.4.*", features = ["wayland"] }
 # Here is inserted the Cargo.deps file