refactor: close database connections on shutdown (#4255)

This explicitly closes the database connection during shutdown.

docs/content/en/configuration/miscellaneous/server.md

@@ -37,7 +37,7 @@ server:
   timeouts:
     read: 6s
     write: 6s
-    idle: 10s
+    idle: 30s
 ```
 
 ## Options

internal/commands/root.go

@@ -193,6 +193,10 @@ func runServices(config *schema.Configuration, providers middlewares.Providers,
 		}
 	}
 
+	if err = providers.StorageProvider.Close(); err != nil {
+		log.WithError(err).Errorf("Error occurred closing the database connection")
+	}
+
 	if err = g.Wait(); err != nil {
 		log.WithError(err).Errorf("Error occurred waiting for shutdown")
 	}