Update module github.com/theckman/go-flock to v0.8.1

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/pierrec/lz4 v2.0.5+incompatible // indirect
 	github.com/prometheus/client_golang v1.11.0
 	github.com/russross/blackfriday/v2 v2.1.0
-	github.com/theckman/go-flock v0.8.0
+	github.com/theckman/go-flock v0.8.1
 	github.com/tstranex/u2f v1.0.0
 	go.opencensus.io v0.23.0
 	golang.org/x/crypto v0.0.0-20210506145944-38f3c27a63bf

go.sum

@@ -341,6 +341,8 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/theckman/go-flock v0.8.0 h1:h0ssvtvRY44GJyWJW9cZhahYVVnLVaAhlB8H/4TOt5c=
 github.com/theckman/go-flock v0.8.0/go.mod h1:kjuth3y9VJ2aNlkNEO99G/8lp9fMIKaGyBmh84IBheM=
+github.com/theckman/go-flock v0.8.1 h1:kTixuOsFBOtGYSTLRLWK6GOs1hk/8OD11sR1pDd0dl4=
+github.com/theckman/go-flock v0.8.1/go.mod h1:kjuth3y9VJ2aNlkNEO99G/8lp9fMIKaGyBmh84IBheM=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
 github.com/tstranex/u2f v1.0.0 h1:HhJkSzDDlVSVIVt7pDJwCHQj67k7A5EeBgPmeD+pVsQ=
 github.com/tstranex/u2f v1.0.0/go.mod h1:eahSLaqAS0zsIEv80+vXT7WanXs7MQQDg3j3wGBSayo=