chore(deps): update module golang.org/x/net to v0.19.0

This MR contains the following updates:

Package	Type	Update	Change
golang.org/x/net	require	minor	v0.17.0 -> v0.19.0

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go.mod

@@ -6,8 +6,8 @@ require (
 	github.com/refraction-networking/utls v1.5.4
 	gitlab.com/yawning/edwards25519-extra v0.0.0-20231005122941-2149dcafc266
 	gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/goptlib v1.5.0
-	golang.org/x/crypto v0.14.0
-	golang.org/x/net v0.17.0
+	golang.org/x/crypto v0.16.0
+	golang.org/x/net v0.19.0
 )
 
 require (
@@ -16,8 +16,8 @@ require (
 	github.com/gaukas/godicttls v0.0.4 // indirect
 	github.com/klauspost/compress v1.16.7 // indirect
 	github.com/quic-go/quic-go v0.37.4 // indirect
-	golang.org/x/sys v0.13.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 )
 
 go 1.20