Update everything to gtk-rs git, relm4 next

Now everything is in one workspace again. Hopefully this also builds on
CI.

applets/cosmic-panel-button/Cargo.toml

@@ -5,9 +5,9 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [dependencies]
-cosmic-panel-config = { git="https://github.com/pop-os/cosmic-panel/", features = ["gtk4"] }
+cosmic-panel-config = { git="https://github.com/pop-os/cosmic-panel/", branch = "gtk-rs-git_nobuild", features = ["gtk4"] }
 cascade = "1.0.0"
-gtk4 = { version = "0.4.5", features = ["v4_4"] }
+gtk4 = { git = "https://github.com/gtk-rs/gtk4-rs", features = ["v4_4"] }
 once_cell = "1.9.0"
 pretty_env_logger = "0.4"
 anyhow = "1.0.50"
@@ -16,4 +16,4 @@ i18n-embed-fl = "0.6.4"
 rust-embed = "6.3.0"
 
 [build-dependencies]
-gio = "0.15.10"
+glib-build-tools = { git = "https://github.com/gtk-rs/gtk-rs-core" }

applets/cosmic-panel-button/build.rs

@@ -1,5 +1,5 @@
 fn main() {
-    gio::compile_resources(
+    glib_build_tools::compile_resources(
         "data/resources",
         "data/resources/resources.gresource.xml",
         "compiled.gresource",