Fix CI parameter configuration

See gh-90

Author: philwebb

ci/tasks/promote.yml

@@ -4,7 +4,7 @@ inputs:
 - name: git-repo
 - name: artifactory-repo
 params:
-  RELEASE_TYPE
+  RELEASE_TYPE:
   ARTIFACTORY_SERVER:
   ARTIFACTORY_USERNAME:
   ARTIFACTORY_PASSWORD:

ci/tasks/stage.yml

@@ -9,6 +9,6 @@ caches:
 - path: maven
 - path: gradle
 params:
-  RELEASE_TYPE
+  RELEASE_TYPE:
 run:
   path: git-repo/ci/scripts/stage.sh