Bump golang.org/x/net from 0.21.0 to 0.23.0 in /tools/release/image-mirror #4003

Job	Run time
changes	5s
create-test-ref	4s
get-test-cases	4s
validate-markdown	9s
build	20m 6s
build-windows	17m 49s
packaging-msi	1m 43s
packaging-deb	19s
packaging-rpm	45s
run-test-case (statsd_mock)	23s
run-test-case (otlp_metric_mock)	17s
run-test-case (otlp_mock)	19s
run-test-case (otlp_grpc_exporter_metric_mock)	23s
run-test-case (otlp_grpc_exporter_trace_mock)	17s
run-test-case (otlp_http_exporter_metric_mock)	24s
run-test-case (otlp_http_exporter_trace_mock)	23s
run-test-case (sapm_exporter_trace_mock)	16s
run-test-case (signalfx_exporter_metric_mock)	21s
run-test-case (datadog_exporter_metric_mock)	17s
run-test-case (datadog_exporter_trace_mock)	22s
run-test-case (prometheus_mock)	19s
run-test-case (zipkin_mock)	21s
run-test-case (jaeger_mock)	19s
run-test-case (logzio_exporter_trace_mock)	19s
test-control-stript	8s
	46m 12s

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