build(deps): bump glib-macros from 0.19.3 to 0.19.4 (#32017)

Bumps [glib-macros](https://github.com/gtk-rs/gtk-rs-core) from 0.19.3 to 0.19.4.
- [Release notes](https://github.com/gtk-rs/gtk-rs-core/releases)
- [Changelog](https://github.com/gtk-rs/gtk-rs-core/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gtk-rs/gtk-rs-core/compare/0.19.3...0.19.4)

---
updated-dependencies:
- dependency-name: glib-macros
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.lock

@@ -2101,9 +2101,9 @@ dependencies = [
 
 [[package]]
 name = "glib-macros"
-version = "0.19.3"
+version = "0.19.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9972bb91643d589c889654693a4f1d07697fdcb5d104b5c44fb68649ba1bf68d"
+checksum = "d8bba315e8ce8aa59631545358450f4962557e89b5f7db7442e7153b47037f71"
 dependencies = [
  "heck",
  "proc-macro-crate 3.1.0",