Snippets for wayfire-config-manager 0.9.0 from Alpine s390x

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-s390x/testing/wcm/wcm-0.9.0-r0.log.

• ../subprojects/wdisplays/src/main.c:1086:3: warning: 'G_APPLICATION_FLAGS_NONE' is deprecated: Use 'G_APPLICATION_DEFAULT_FLAGS' instead [-Wdeprecated-declarations]
   1086 |   GtkApplication *app = gtk_application_new(WDISPLAYS_APP_ID, G_APPLICATION_FLAGS_NONE);
        |   ^~~~~~~~~~~~~~