style: fix linters

Author: luislhl

hathor/prometheus.py

@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
 import gc
+import os
 from typing import TYPE_CHECKING
 
 from prometheus_client import CollectorRegistry, Gauge, write_to_textfile
@@ -70,6 +70,7 @@
     'threshold': 'Current threshold of the garbage collector',
 }
 
+
 class PrometheusMetricsExporter:
     """ Class that sends hathor metrics to a node exporter that will be read by Prometheus
     """