fix missing packages

.gitea/workflows/backend_run-lint.yaml

@@ -25,6 +25,8 @@ jobs:
         ls -la
         # only install dev-packages
         pipenv install --categories=dev-packages
+        pipenv run pip freeze
+
       working-directory: backend
 
     - name: Run linter

.gitea/workflows/backend_run-test.yaml

@@ -25,6 +25,7 @@ jobs:
         ls -la
         # install all packages, including dev-packages
         pipenv install --dev
+        pipenv run pip freeze
       working-directory: backend
 
     - name: Run Tests