Update module github.com/spf13/pflag to v1.0.9

Author: renovate[bot]

cmd/telemetrygen/go.mod

@@ -7,7 +7,7 @@ toolchain go1.22.8
 require (
 	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0
 	github.com/spf13/cobra v1.8.1
-	github.com/spf13/pflag v1.0.5
+	github.com/spf13/pflag v1.0.9
 	github.com/stretchr/testify v1.10.0
 	go.opentelemetry.io/collector/component v0.115.0
 	go.opentelemetry.io/collector/pdata v1.21.0