Only run CI if everything succeeds

.gitlab-ci.yml

@@ -23,7 +23,7 @@ build:
     - "./gradlew build"
   rules:
     - if: "$CI_COMMIT_BRANCH == 'master'"
-      when: always
+      when: on_success
 
 test:
   stage: "test"
@@ -37,7 +37,7 @@ test:
         - "build/test-results/**/TEST-*.xml"
   rules:
     - if: "$CI_COMMIT_BRANCH == 'master'"
-      when: always
+      when: on_success
   dependencies:
     - "build"
 
@@ -54,4 +54,4 @@ release:
     - "test"
   rules:
     - if: "$CI_COMMIT_TAG != '' && $CI_COMMIT_BRANCH == 'master'"
-      when: always
+      when: on_success