fix: Bump CPU limit for the directory size exporter container #2662

Job	Run time
setup	27s
e2e-istio	10m 28s
e2e (logs)	11m 26s
e2e-dev (logs)	6m 57s
e2e (metrics && set_a)	13m 5s
e2e-dev (metrics)	6m 24s
e2e (metrics && set_b)	9m 32s
e2e-self-mon (logs, healthy)	7m 48s
e2e-dev (traces)	6m 12s
e2e (traces)	9m 9s
e2e-self-mon (logs, backpressure)	9m 18s
e2e (telemetry)	7m 54s
e2e-self-mon (logs, outage)	10m 18s
e2e (max-pipeline)	6m 26s
e2e-self-mon (metrics, healthy)	7m 20s
e2e (telemetry-log-analysis)	13m 37s
e2e-self-mon (metrics, backpressure)	11m 47s
e2e-self-mon (metrics, outage)	12m 17s
e2e-self-mon (traces, healthy)	7m 49s
e2e-self-mon (traces, backpressure)	9m 17s
e2e-self-mon (traces, outage)	12m 17s
	3h 9m 48s

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