Update edgexfoundry/docker-core-metadata-go Docker tag to v1.3.1

Author: renovate[bot]

mqtt/edgex/docker-compose.yml

@@ -117,7 +117,7 @@ services:
       - redis
 
   metadata:
-    image: edgexfoundry/docker-core-metadata-go:1.2.1
+    image: edgexfoundry/docker-core-metadata-go:1.3.1
     ports:
       - "127.0.0.1:48081:48081"
     container_name: edgex-core-metadata