CI/macos: Bump feature & only build gtk4 crate

Avoids failing when building examples requiring too new features

Author: bilelmoussaoui

.github/workflows/macos.yml

@@ -40,12 +40,12 @@ jobs:
       uses: actions-rs/cargo@v1
       with:
         command: build
-        args: --features v4_8,xml_validation
+        args: --features v4_10,xml_validation --manifest-path ./gtk4/Cargo.toml
     - name: Clippy
       uses: actions-rs/cargo@v1
       with:
         command: clippy
-        args: --features v4_8,xml_validation
+        args: --features v4_8,xml_validation --manifest-path ./gtk4/Cargo.toml
     # FIXME: renable once https://github.com/gtk-rs/gtk4-rs/issues/1235 is fixed
     #- name: Tests
     #  uses: actions-rs/cargo@v1