gitlab-ci: py3-gitlab needed for mypy is in testing, ruff no longer is (MR 24)

[ci:skip-build]: already built successfully in CI

.gitlab-ci.yml

@@ -3,12 +3,12 @@ image: alpine:edge
 
 ruff:
   before_script:
-  - echo 'https://dl-cdn.alpinelinux.org/alpine/edge/testing' >> /etc/apk/repositories
   - adduser -D build
   script:
   - .ci/ruff.sh
 mypy:
   before_script:
+  - echo 'https://dl-cdn.alpinelinux.org/alpine/edge/testing' >> /etc/apk/repositories
   - adduser -D build
   script:
   - .ci/mypy.sh