Update dependencies and use Go 1.21

go.mod

@@ -1,13 +1,22 @@
 module github.com/musingstudio/pherephone
 
-go 1.13
+go 1.21
 
 require (
 	github.com/gologme/log v1.3.0
-	github.com/writeas/activityserve v0.0.0-20230428180247-dc13a4f4d835
+	github.com/writeas/activityserve v0.0.0-20240830214310-c451e1525408
 )
 
 require (
+	github.com/captncraig/cors v0.0.0-20190703115713-e80254a89df1 // indirect
+	github.com/dchest/uniuri v1.2.0 // indirect
+	github.com/go-fed/httpsig v1.1.0 // indirect
+	github.com/gorilla/mux v1.8.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/smartystreets/goconvey v1.8.1 // indirect
+	github.com/stretchr/testify v1.9.0 // indirect
+	github.com/writeas/go-webfinger v1.1.0 // indirect
+	github.com/writefreely/go-nodeinfo v1.2.0 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 )