tests/api: add --net=host for podman command

Otherwise there are issues on el-10.

test/cases/api.sh

@@ -119,6 +119,7 @@ sudo "${CONTAINER_RUNTIME}" run -d --name "${DB_CONTAINER_NAME}" \
     -e POSTGRES_PASSWORD=foobar \
     -e POSTGRES_DB=osbuildcomposer \
     -p 5432:5432 \
+    --net host \
     quay.io/osbuild/postgres:13-alpine
 
 # Dump the logs once to have a little more output