Temporarily lock black version in pipeline

Author: Andreas Poulsen

.gitlab-ci.yml

@@ -46,6 +46,6 @@ Lint python scripts:
   image: python:3.10-alpine
   before_script:
     - apk add --no-cache --virtual .deps gcc musl-dev
-    - pip install black
+    - pip install black==22.12.0
   script:
     - black --check --diff --exclude=migrations .