Fix go.mod file

Author: johscheuer

go.mod

@@ -36,6 +36,7 @@ require (
 
 require (
 	github.com/pkg/errors v0.9.1
+	github.com/prometheus/client_model v0.6.2
 	github.com/robfig/cron/v3 v3.0.1
 )
 
@@ -86,7 +87,6 @@ require (
 	github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f // indirect
 	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
-	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/procfs v0.15.1 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/sagikazarmark/locafero v0.7.0 // indirect