Fix clippy for rust 1.81 #312

Job	Run time
clippy	1m 58s
fmt	13s
build	4m 50s
tests (ingest)	2m 18s
tests (coverage-point-calculator)	1m 34s
tests (coverage-map)	2m 19s
tests (mobile-packet-verifier)	2m 55s
tests (reward-scheduler)	1m 11s
tests (task-manager)	59s
tests-postgres (boost-manager)	3m 32s
tests-postgres (file-store)	2m 14s
tests-postgres (iot-config)	3m 0s
tests-postgres (iot-packet-verifier)	4m 38s
tests-postgres (iot-verifier)	3m 35s
tests-postgres (mobile-config)	2m 44s
tests-postgres (mobile-verifier)	3m 52s
build-release	0s
	41m 52s

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