Update module mattes/migrate to v3

Author: renovate-bot

go.mod

@@ -38,7 +38,7 @@ require (
 	github.com/levigross/grequests v0.0.0-20190908174114-253788527a1a
 	github.com/lib/pq v1.3.0
 	github.com/markbates/goth v0.0.0-20180113214406-24f8ac10e57e
-	github.com/mattes/migrate v0.0.0-20171208214826-d23f71b03c4a
+	github.com/mattes/migrate/v3/v3 v3.0.1
 	github.com/moul/http2curl v1.0.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
 	github.com/pkg/errors v0.9.1