Update go.mod and go.sum to latest version from networkservicemesh/sd…

…k@master networkservicemesh/sdk#557

networkservicemesh/sdk PR link: networkservicemesh/sdk#557

networkservicemesh/sdk commit message:
commit 131208c51f2232e58ae38f8eeeb79d761704c830
Author: Ed Warnicke <hagbard@gmail.com>
Date:   Wed Oct 21 07:05:25 2020 -0500

    Fix mechanisms.Server to return a more meaningful error (#557)

    Signed-off-by: Ed Warnicke <hagbard@gmail.com>

Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/edwarnicke/exechelper v1.0.2
 	github.com/edwarnicke/serialize v1.0.2-0.20201017171944-cf1114ca2f6f // indirect
 	github.com/kelseyhightower/envconfig v1.4.0
-	github.com/networkservicemesh/sdk v0.0.0-20201020210321-8b0bd573228d
+	github.com/networkservicemesh/sdk v0.0.0-20201021120525-131208c51f22
 	github.com/sirupsen/logrus v1.6.0
 	github.com/spiffe/go-spiffe/v2 v2.0.0-alpha.4.0.20200528145730-dc11d0c74e85
 	github.com/stretchr/testify v1.6.1

go.sum

@@ -284,8 +284,8 @@ github.com/nats-io/stan.go v0.6.0/go.mod h1:eIcD5bi3pqbHT/xIIvXMwvzXYElgouBvaVRf
 github.com/nbutton23/zxcvbn-go v0.0.0-20180912185939-ae427f1e4c1d/go.mod h1:o96djdrsSGy3AWPyBgZMAGfxZNfgntdJG+11KU4QvbU=
 github.com/networkservicemesh/api v0.0.0-20201014184533-ca42a07d7e15 h1:WUoouahed3mQZLc51mkIhqTEIp/zUO3pwqIKR/sYkms=
 github.com/networkservicemesh/api v0.0.0-20201014184533-ca42a07d7e15/go.mod h1:qvxdY1Zt4QTtiG+uH1XmjpegeHjlt5Jj4A8iK55iJPI=
-github.com/networkservicemesh/sdk v0.0.0-20201020210321-8b0bd573228d h1:LSGgzC0E+Ofj26d7BbXbcM4+CZ5SNyfPx/zrCZkqDZM=
-github.com/networkservicemesh/sdk v0.0.0-20201020210321-8b0bd573228d/go.mod h1:vLg2sERW4pDjeaqCiLHuiIiMhhpW1r3GzS5RuCvXPfQ=
+github.com/networkservicemesh/sdk v0.0.0-20201021120525-131208c51f22 h1:/7+0yApEe82sduNV7wh+4SOF2nCCiy2A17ZHo30CvIA=
+github.com/networkservicemesh/sdk v0.0.0-20201021120525-131208c51f22/go.mod h1:3D2gyQie8eMQ8iCUHOJ+rlmHtgIPfWYT+FTEkoS7oTk=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/nishanths/exhaustive v0.0.0-20200811152831-6cf413ae40e0/go.mod h1:wBEpHwM2OdmeNpdCvRPUlkEbBuaFmcK4Wv8Q7FuGW3c=