PIPELINE: remove newlines from echo

.gitlab-ci.yml

@@ -16,9 +16,9 @@ add-commit:
   script:
     - COLON=':'
     - echo "test" >> test.tsv
-    - echo "{\"branch\"${COLON} \"main\", \"commit_message\"${COLON} \"new commit via ci pipeline\", \"actions\"${COLON} [ { \"action\"${COLON} \"update\", \"file_path\"${COLON} \"test.tsv\", \"encoding\"${COLON} \"base64\", \"content\"${COLON} \"" > commit.json
+    - echo -n "{\"branch\"${COLON} \"main\", \"commit_message\"${COLON} \"new commit via ci pipeline\", \"actions\"${COLON} [ { \"action\"${COLON} \"update\", \"file_path\"${COLON} \"test.tsv\", \"encoding\"${COLON} \"base64\", \"content\"${COLON} \"" > commit.json
     - base64 test.tsv >> commit.json
-    - echo '" } ] }' >> commit.json
+    - echo -n '" } ] }' >> commit.json
     - cat commit.json
     - curl --fail-with-body --request POST --header "PRIVATE-TOKEN${COLON} $CIPRIVATETOKEN" --header "Content-Type${COLON} application/json" --data "$(cat commit.json)" "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/repository/commits"