deps: bump github.com/fortytw2/leaktest from 1.2.0 to 1.3.0 (#3943)

Bumps [github.com/fortytw2/leaktest](https://github.com/fortytw2/leaktest) from 1.2.0 to 1.3.0.
- [Release notes](https://github.com/fortytw2/leaktest/releases)
- [Commits](https://github.com/fortytw2/leaktest/compare/v1.2.0...v1.3.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
 	github.com/btcsuite/btcd v0.0.0-20190115013929-ed77733ec07d
 	github.com/btcsuite/btcutil v0.0.0-20180706230648-ab6388e0c60a
-	github.com/fortytw2/leaktest v1.2.0
+	github.com/fortytw2/leaktest v1.3.0
 	github.com/go-kit/kit v0.6.0
 	github.com/go-logfmt/logfmt v0.3.0
 	github.com/go-stack/stack v1.8.0 // indirect

go.sum

@@ -25,6 +25,8 @@ github.com/etcd-io/bbolt v1.3.3 h1:gSJmxrs37LgTqR/oyJBWok6k6SvXEUerFTbltIhXkBM=
 github.com/etcd-io/bbolt v1.3.3/go.mod h1:ZF2nL25h33cCyBtcyWeZ2/I3HQOfTP+0PIEvHjkjCrw=
 github.com/fortytw2/leaktest v1.2.0 h1:cj6GCiwJDH7l3tMHLjZDo0QqPtrXJiWSI9JgpeQKw+Q=
 github.com/fortytw2/leaktest v1.2.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHquHwclZch5g=
+github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw=
+github.com/fortytw2/leaktest v1.3.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHquHwclZch5g=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/go-kit/kit v0.6.0 h1:wTifptAGIyIuir4bRyN4h7+kAa2a4eepLYVmRe5qqQ8=