chore(deps): update dependency prometheus to v3.8.1-0

requirements.yml

@@ -49,7 +49,7 @@
   version: v18-0
   name: postgres_backup
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-prometheus.git
-  version: v3.8.0-0
+  version: v3.8.1-0
   name: prometheus
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-prometheus-node-exporter.git
   version: v1.9.1-12