ci: Enable v1_12 feature for graphene

Author: sdroege

.github/workflows/CI.yml

@@ -24,7 +24,7 @@ jobs:
           - { name: "gdk-pixbuf", features: "v2_42", nightly: "--all-features", test_sys: true }
           - { name: "gio", features: "v2_84", nightly: "--all-features", test_sys: true }
           - { name: "glib", features: "v2_84,log", nightly: "--all-features", test_sys: true }
-          - { name: "graphene", features: "", nightly: "", test_sys: true }
+          - { name: "graphene", features: "v1_12", nightly: "", test_sys: true }
           - { name: "pango", features: "v1_56", nightly: "--all-features", test_sys: true }
           - { name: "pangocairo", features: "", nightly: "--all-features", test_sys: true }
     steps: