feat: postgres => sqlite

.env.test

@@ -1,4 +1,4 @@
-DATABASE_URI="postgresql://postgres:postgres@localhost:5432/whisperbox_test"
-ENVIRONMENT="development"
-API_SECRET="foo"
-BROKER_URL="redis://localhost:6379/0"
+DATABASE_URI="sqlite:///memory"
+ENVIRONMENT="test"
+API_SECRET="test_secret"
+BROKER_URL="memory://"