Stage, not state

.gitlab-ci-unix.yml

@@ -194,6 +194,7 @@ spec:
   needs: []
 
 "$[[ inputs.os ]]-$[[ inputs.platform ]] [cleanup]":
+  stage: cleanup
   extends:
     - .$[[ inputs.os ]]-build
   script:

.gitlab-ci.yml

@@ -2,7 +2,7 @@ variables:
   BUILD_ARGS:
     description: "Extra arguments to pass on gmake command lines."
 
-states:
+stages:
   - build
   - test
   - cleanup