deps: Update github.com/ulikunitz/xz to v0.5.15 (#728)

Author: jrasell

go.mod

@@ -319,7 +319,7 @@ require (
 	github.com/tklauser/go-sysconf v0.3.15 // indirect
 	github.com/tklauser/numcpus v0.10.0 // indirect
 	github.com/tv42/httpunix v0.0.0-20191220191345-2ba4b9c3382c // indirect
-	github.com/ulikunitz/xz v0.5.14 // indirect
+	github.com/ulikunitz/xz v0.5.15 // indirect
 	github.com/vishvananda/netlink v1.3.0 // indirect
 	github.com/vishvananda/netns v0.0.5 // indirect
 	github.com/vmihailenco/msgpack/v5 v5.4.1 // indirect

go.sum

@@ -1716,8 +1716,8 @@ github.com/tv42/httpunix v0.0.0-20191220191345-2ba4b9c3382c/go.mod h1:hzIxponao9
 github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGrc=
 github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
 github.com/ulikunitz/xz v0.5.10/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
-github.com/ulikunitz/xz v0.5.14 h1:uv/0Bq533iFdnMHZdRBTOlaNMdb1+ZxXIlHDZHIHcvg=
-github.com/ulikunitz/xz v0.5.14/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
+github.com/ulikunitz/xz v0.5.15 h1:9DNdB5s+SgV3bQ2ApL10xRc35ck0DuIX/isZvIk+ubY=
+github.com/ulikunitz/xz v0.5.15/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 github.com/vektra/neko v0.0.0-20170502000624-99acbdf12420 h1:OMelMt+D75Fax25tMcBfUoOyNp8OziZK/Ca8dB8BX38=
 github.com/vektra/neko v0.0.0-20170502000624-99acbdf12420/go.mod h1:7tfPLehrsToaevw9Vi9iL6FOslcBJ/uqYQc8y3YIbdI=
 github.com/vishvananda/netlink v1.3.0 h1:X7l42GfcV4S6E4vHTsw48qbrV+9PVojNfIhZcwQdrZk=