fix: remove unsupported working-directory in snyk step

Author: pepega

.github/workflows/python-ci.yml

@@ -62,8 +62,7 @@ jobs:
         env:
           SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
         with:
-          args: --severity-threshold=high --file=requirements.txt
-        working-directory: app_python
+          args: --severity-threshold=high --file=app_python/requirements.txt
 
   docker-build-push:
     name: Build and push Docker image