upgrade dependencies

go.mod

@@ -1,17 +1,17 @@
 module github.com/ftl/tci
 
-go 1.18
+go 1.19
 
 require (
-	github.com/gorilla/websocket v1.4.2
-	github.com/spf13/cobra v1.1.1
-	github.com/stretchr/testify v1.7.0
+	github.com/gorilla/websocket v1.5.0
+	github.com/spf13/cobra v1.6.1
+	github.com/stretchr/testify v1.8.2
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )