Chore: update crewjam/saml library to the latest master (#29991)

this fixes bug in processing SAML response with empty Issuer element

go.mod

@@ -20,7 +20,7 @@ require (
 	github.com/benbjohnson/clock v0.0.0-20161215174838-7dc76406b6d3
 	github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b
 	github.com/centrifugal/centrifuge v0.13.0
-	github.com/crewjam/saml v0.4.5
+	github.com/crewjam/saml v0.4.6-0.20201227203850-bca570abb2ce
 	github.com/davecgh/go-spew v1.1.1
 	github.com/denisenkom/go-mssqldb v0.0.0-20200620013148-b91950f658ec
 	github.com/facebookgo/ensure v0.0.0-20160127193407-b4ab57deab51 // indirect
@@ -38,7 +38,7 @@ require (
 	github.com/gobwas/glob v0.2.3
 	github.com/golang/mock v1.4.4
 	github.com/golang/protobuf v1.4.3
-	github.com/google/go-cmp v0.5.2
+	github.com/google/go-cmp v0.5.4
 	github.com/google/uuid v1.1.2
 	github.com/gosimple/slug v1.4.2
 	github.com/grafana/grafana-plugin-model v0.0.0-20190930120109-1fc953a61fb4
@@ -86,7 +86,6 @@ require (
 	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
 	golang.org/x/sys v0.0.0-20201022201747-fb209a7c41cd // indirect
 	golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e
-	golang.org/x/tools v0.0.0-20201023150057-2f4fa188d925 // indirect
 	gonum.org/v1/gonum v0.6.0
 	google.golang.org/api v0.33.0
 	google.golang.org/appengine v1.6.7 // indirect

go.sum

@@ -241,8 +241,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSY
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
 github.com/crewjam/httperr v0.0.0-20190612203328-a946449404da/go.mod h1:+rmNIXRvYMqLQeR4DHyTvs6y0MEMymTz4vyFpFkKTPs=
-github.com/crewjam/saml v0.4.5 h1:H9u+6CZAESUKHxMyxUbVn0IawYvKZn4nt3d4ccV4O/M=
-github.com/crewjam/saml v0.4.5/go.mod h1:qCJQpUtZte9R1ZjUBcW8qtCNlinbO363ooNl02S68bk=
+github.com/crewjam/saml v0.4.6-0.20201227203850-bca570abb2ce h1:pAuTpLhCqC20s2RLhUirfw606jReW+8z2U5EvG+0S7E=
+github.com/crewjam/saml v0.4.6-0.20201227203850-bca570abb2ce/go.mod h1:/gCaeLf13J8/621RNZ6TaExji/8xCWcn6UmdJ57wURQ=
 github.com/cyberdelia/templates v0.0.0-20141128023046-ca7fffd4298c/go.mod h1:GyV+0YP4qX0UQ7r2MoYZ+AvYDp12OF5yg4q8rGnyNh4=
 github.com/cznic/b v0.0.0-20180115125044-35e9bbe41f07/go.mod h1:URriBxXwVq5ijiJ12C7iIZqlA69nTlI+LgI6/pwftG8=
 github.com/cznic/fileutil v0.0.0-20180108211300-6a051e75936f/go.mod h1:8S58EK26zhXSxzv7NQFpnliaOQsmDUxvoQO3rt154Vg=
@@ -564,6 +564,8 @@ github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.4 h1:L8R9j+yAqZuZjsqh/z+F1NCffTKKLShY6zXTItVIZ8M=
+github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-github v17.0.0+incompatible/go.mod h1:zLgOLi98H3fifZn+44m+umXrS52loVEgC2AApnigrVQ=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
 github.com/google/gofuzz v0.0.0-20161122191042-44d81051d367/go.mod h1:HP5RmnzzSNb993RKQDq4+1A4ia9nllfqcQFTQJedwGI=
@@ -1640,8 +1642,8 @@ golang.org/x/tools v0.0.0-20200904185747-39188db58858/go.mod h1:Cj7w3i3Rnn0Xh82u
 golang.org/x/tools v0.0.0-20200915173823-2db8f0ff891c/go.mod h1:z6u4i615ZeAfBE4XtMziQW1fSVJXACjjbWkB/mvPzlU=
 golang.org/x/tools v0.0.0-20200918232735-d647fc253266/go.mod h1:z6u4i615ZeAfBE4XtMziQW1fSVJXACjjbWkB/mvPzlU=
 golang.org/x/tools v0.0.0-20201017001424-6003fad69a88/go.mod h1:z6u4i615ZeAfBE4XtMziQW1fSVJXACjjbWkB/mvPzlU=
-golang.org/x/tools v0.0.0-20201023150057-2f4fa188d925 h1:iGGR3nU1TUd+WTF17QPTTShBEDG66IKsDIDKtC4EseY=
-golang.org/x/tools v0.0.0-20201023150057-2f4fa188d925/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.0.0-20201226215659-b1c90890d22a h1:pdfjQ7VswBeGam3EpuEJ4e8EAb7JgaubV570LO/SIQM=
+golang.org/x/tools v0.0.0-20201226215659-b1c90890d22a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -1831,6 +1833,7 @@ gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.0-20200603094226-e3079894b1e8/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 h1:tQIYjPdBoyREyB9XMu+nnTclpTYkz2zFM+lzLJFO4gQ=
 gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=