Specify stages and fix deploy rule

.gitlab-ci.yml

@@ -5,18 +5,24 @@ cache:
     - app/build
     - changelog/build
 
+stages:
+  - build
+  - deploy
+
 build:
+  stage: build
   script:
     - cp $APP_RELEASE_GRADLE app/release.gradle
     - cp $LOCAL_PROPERTIES local.properties
     - ./generate-version.sh
     - ./gradlew :app:bundle
 deploy:
+  stage: deploy
   script:
     - cp $KEYS_JSON app/keys.json
     - ./gradlew publishReleaseBundle --track internal
   after_script:
     - rm -rf app/keys.json
   rules:
-    - if: '$CI_COMMIT_BRANCH == "develop"'
+    - if: '$CI_COMMIT_BRANCH == "development"'
       when: always
\ No newline at end of file