incorporate git-ref crate into releases

Author: Byron

etc/release.sh

@@ -2,6 +2,6 @@
 
 set -eu -o pipefail
 
-for crate in git-features git-object git-odb git-repository git-transport gitoxide-core .; do
+for crate in git-features git-ref git-object git-odb git-repository git-transport gitoxide-core .; do
   (cd $crate && cargo release "$@")
 done