update vendor deps; require go 1.18

go.mod

@@ -1,11 +1,30 @@
 module github.com/whosonfirst/go-webhookd/v3
 
-go 1.16
+go 1.18
 
 require (
 	github.com/aaronland/go-chicken v0.2.2
 	github.com/aaronland/go-http-server v1.0.0
 	github.com/aaronland/go-roster v1.0.0
-	github.com/sfomuseum/go-flags v0.8.2
-	gocloud.dev v0.25.0
+	github.com/sfomuseum/go-flags v0.10.0
+	gocloud.dev v0.27.0
+)
+
+require (
+	github.com/aaronland/go-ucd/v13 v13.0.0 // indirect
+	github.com/akrylysov/algnhsa v0.12.1 // indirect
+	github.com/aws/aws-lambda-go v1.13.3 // indirect
+	github.com/fsnotify/fsnotify v1.5.4 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/googleapis/gax-go/v2 v2.4.0 // indirect
+	go.opencensus.io v0.23.0 // indirect
+	golang.org/x/net v0.0.0-20220802222814-0bcc04d9c69b // indirect
+	golang.org/x/sys v0.0.0-20220731174439-a90be440212d // indirect
+	golang.org/x/text v0.3.7 // indirect
+	golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f // indirect
+	google.golang.org/api v0.91.0 // indirect
+	google.golang.org/genproto v0.0.0-20220802133213-ce4fa296bf78 // indirect
+	google.golang.org/grpc v1.48.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 )