Write reportfile correctly

.gitlab-ci.yml

@@ -18,7 +18,7 @@ pytest:
     - apk add poetry
     - poetry install
   script:
-    - poetry run pytest --cov-report xml --cov-report term-missing:skip-covered --cov=funkwhale_api_client --junitxml=report.yml tests
+    - poetry run pytest --cov-report xml --cov-report term-missing:skip-covered --cov=funkwhale_api_client --junitxml=report.xml tests
   artifacts:
     when: always
     reports: