chore: update tj-actions/changed-files digest to 251f07e #3738

Job	Run time
setup	25s
e2e-experimental (logs)	7m 54s
e2e (logs)	11m 20s
e2e-experimental (metrics)	5m 49s
e2e (metrics && set_a)	11m 56s
e2e-experimental (traces)	6m 3s
e2e (metrics && set_b)	10m 9s
e2e-istio	10m 58s
e2e (traces)	9m 48s
e2e-self-mon (logs, healthy)	6m 38s
e2e (telemetry)	7m 27s
e2e-self-mon (logs, backpressure)	14m 9s
e2e (max-pipeline)	6m 9s
e2e-self-mon (logs, outage)	12m 38s
e2e (telemetry-log-analysis)	12m 14s
e2e-self-mon (metrics, healthy)	6m 28s
e2e-self-mon (metrics, backpressure)	13m 9s
e2e-self-mon (metrics, outage)	12m 39s
e2e-self-mon (traces, healthy)	7m 0s
e2e-self-mon (traces, backpressure)	9m 38s
e2e-self-mon (traces, outage)	12m 38s
	3h 15m 9s

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