refactor(ci): simplify commit title extraction step

.drone.yml

@@ -50,12 +50,6 @@ steps:
         - echo "Restart the container"
         - docker compose down && docker compose up -d
 
-  - name: extract-commit-title
-    image: alpine
-    commands:
-      - export COMMIT_TITLE=$(echo "${DRONE_COMMIT_MESSAGE}" | head -n1)
-      - echo "COMMIT_TITLE=$COMMIT_TITLE"
-
   - name: discord notification
     image: appleboy/drone-discord
     settings:
@@ -68,7 +62,7 @@ steps:
       message:
         - |
           ${DRONE_REPO}
-          Commit: ${COMMIT_TITLE}
+          Commit: ${DRONE_COMMIT_MESSAGE | truncate 50}
           Branch: ${DRONE_COMMIT_BRANCH}
           Link: ${DRONE_BUILD_LINK}
     when: