Upgrade jwt library

andygrunwald#343

 https://github.com/dgrijalva/jwt-go has been abondoned (see dgrijalva/jwt-go#462). In order to fix the vulnarability we have to switch to a community driven fork https://github.com/golang-jwt/jwt . The issue has been fixed in golang-jwt/jwt#12

Author: yarlson

go.mod

@@ -3,8 +3,8 @@ module github.com/andygrunwald/go-jira
 go 1.12
 
 require (
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/fatih/structs v1.1.0
+	github.com/golang-jwt/jwt v3.2.1+incompatible
 	github.com/google/go-cmp v0.5.6
 	github.com/google/go-querystring v0.0.0-20170111101155-53e6ce116135
 	github.com/pkg/errors v0.9.1

go.sum

@@ -1,7 +1,7 @@
-github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
+github.com/golang-jwt/jwt v3.2.1+incompatible h1:73Z+4BJcrTC+KczS6WvTPvRGOp1WmfEP4Q1lOd9Z/+c=
+github.com/golang-jwt/jwt v3.2.1+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzqecmYZeUEB8OUGHkxJ+I=
 github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
 github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-querystring v0.0.0-20170111101155-53e6ce116135 h1:zLTLjkaOFEFIOxY5BWLFLwh+cL8vOBW4XJ2aqLE/Tf0=

jira.go

@@ -15,7 +15,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/dgrijalva/jwt-go"
+	"github.com/golang-jwt/jwt"
 	"github.com/google/go-querystring/query"
 	"github.com/pkg/errors"
 )