Update go-github library

vendor/github.com/google/go-github/github/messages_test.go

@@ -161,6 +161,14 @@ func TestParseWebHook(t *testing.T) {
 		payload     interface{}
 		messageType string
 	}{
+		{
+			payload:     &CheckRunEvent{},
+			messageType: "check_run",
+		},
+		{
+			payload:     &CheckSuiteEvent{},
+			messageType: "check_suite",
+		},
 		{
 			payload:     &CommitCommentEvent{},
 			messageType: "commit_comment",
@@ -210,6 +218,10 @@ func TestParseWebHook(t *testing.T) {
 			payload:     &LabelEvent{},
 			messageType: "label",
 		},
+		{
+			payload:     &MarketplacePurchaseEvent{},
+			messageType: "marketplace_purchase",
+		},
 		{
 			payload:     &MemberEvent{},
 			messageType: "member",
@@ -278,6 +290,10 @@ func TestParseWebHook(t *testing.T) {
 			payload:     &RepositoryEvent{},
 			messageType: "repository",
 		},
+		{
+			payload:     &RepositoryVulnerabilityAlertEvent{},
+			messageType: "repository_vulnerability_alert",
+		},
 		{
 			payload:     &StatusEvent{},
 			messageType: "status",