Attempt setting environment to "test"

Not sure if this is the main cause. A "test" database environment is created, so maybe this is the root cause of everything?

.github/workflows/redmine_api_tests.yaml

@@ -90,7 +90,7 @@ jobs:
             -   name: "Start Redmine"
                 run: |
                     cd ${{ env.REDMINE_INSTALL_PATH }}
-                    nohup bundle exec rails server -e production -b ${{ env.REDMINE_HOST }} -p ${{ env.REDMINE_PORT }} &
+                    nohup bundle exec rails server -e test -b ${{ env.REDMINE_HOST }} -p ${{ env.REDMINE_PORT }} &
 
             -   name: "Set Redmine URL variable"
                 run: |