Update module coreos/go-systemd to v22

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/amoghe/go-crypt v0.0.0-20191109212615-b2ff80594b7f
 	github.com/bbrks/wrap/v2 v2.5.0
 	github.com/cenkalti/backoff v2.2.1+incompatible
-	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf
+	github.com/coreos/go-systemd/v22/v22 v22.1.0
 	github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594
 	github.com/go-ldap/ldap/v3 v3.2.4
 	github.com/gofrs/flock v0.8.0 // indirect