Update gorilla/websocket v1.5.0 => v1.5.1

Which mostly drops go versions before 1.18 - which we already do not
support.
There are also other small fixes.

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/fatih/color v1.15.0
 	github.com/go-sourcemap/sourcemap v2.1.4-0.20211119122758-180fcef48034+incompatible
 	github.com/golang/protobuf v1.5.3
-	github.com/gorilla/websocket v1.5.0
+	github.com/gorilla/websocket v1.5.1
 	github.com/grafana/xk6-browser v1.2.1
 	github.com/grafana/xk6-grpc v0.1.4-0.20230919144024-6ed5daf33509
 	github.com/grafana/xk6-output-prometheus-remote v0.3.1

go.sum

@@ -91,8 +91,8 @@ github.com/google/pprof v0.0.0-20230728192033-2ba5b33183c6 h1:ZgoomqkdjGbQ3+qQXC
 github.com/google/pprof v0.0.0-20230728192033-2ba5b33183c6/go.mod h1:Jh3hGz2jkYak8qXPD19ryItVnUgpgeqzdkY/D0EaeuA=
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
-github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/gorilla/websocket v1.5.1 h1:gmztn0JnHVt9JZquRuzLw3g4wouNVzKL15iLr/zn/QY=
+github.com/gorilla/websocket v1.5.1/go.mod h1:x3kM2JMyaluk02fnUJpQuwD2dCS5NDG2ZHL0uE0tcaY=
 github.com/grafana/xk6-browser v1.2.1 h1:O2fuHHvmmhXvWTPXzD+jsnt1XkVgVjx0+Lj1hsGIWMM=
 github.com/grafana/xk6-browser v1.2.1/go.mod h1:D3k9/MQHnNKfyzU3fh32pHlrh3GY2LAlkY4wYt/Vn4Y=
 github.com/grafana/xk6-grpc v0.1.4-0.20230919144024-6ed5daf33509 h1:9ujE4S5cA3WDhRJnwNuUDtfk3w9FeWx6PaZ+lb3o46M=