Update crewjam/saml to fix #1

Author: itzg

go.mod

@@ -2,7 +2,7 @@ module github.com/itzg/saml-auth-proxy
 
 require (
 	github.com/beevik/etree v1.1.0 // indirect
-	github.com/crewjam/saml v0.0.0-20180831135026-ebc5f787b786
+	github.com/crewjam/saml v0.0.0-20190501171645-724cb1c4fab1
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/jamiealquiza/envy v1.1.0

go.sum

@@ -2,6 +2,8 @@ github.com/beevik/etree v1.1.0 h1:T0xke/WvNtMoCqgzPhkX2r4rjY3GDZFi+FjpRZY2Jbs=
 github.com/beevik/etree v1.1.0/go.mod h1:r8Aw8JqVegEf0w2fDnATrX9VpkMcyFeM0FhwO62wh+A=
 github.com/crewjam/saml v0.0.0-20180831135026-ebc5f787b786 h1:8OVABJfT9iJh/uHeYlk1HWugxt7j50JPwW2uLOV9Yqs=
 github.com/crewjam/saml v0.0.0-20180831135026-ebc5f787b786/go.mod h1:w5eu+HNtubx+kRpQL6QFT2F3yIFfYVe6+EzOFVU7Hko=
+github.com/crewjam/saml v0.0.0-20190501171645-724cb1c4fab1 h1:tpw2EQhppf+B6c4x64A104fKZ3Usu8a0bPpNCIk/vic=
+github.com/crewjam/saml v0.0.0-20190501171645-724cb1c4fab1/go.mod h1:w5eu+HNtubx+kRpQL6QFT2F3yIFfYVe6+EzOFVU7Hko=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=