CI: create solr config path

Author: jmroot

.github/workflows/test-python-app.yaml

@@ -62,6 +62,7 @@ jobs:
     - name: Configure solr
       run: |
         cd app
+        mkdir -p /var/solr/server/solr/tester/conf
         python manage.py build_solr_schema --configure-directory=/var/solr/server/solr/tester/conf
         python manage.py build_solr_schema -r RELOAD_CORE
         python manage.py rebuild_index --noinput