feat: use millis in RPC metrics #10056

Job	Run time
Build MacOS	2m 37s
Build Ubuntu	4m 57s
cargo-publish-dry-run	6m 6s
Bootstrap checks - Lotus	7m 6s
Calibnet eth mapping check	7m 34s
Bootstrap checks - Forest	3m 44s
Calibnet check	2m 52s
Snapshot export checks	9m 8s
Calibnet kademlia checks	2m 46s
Calibnet no discovery checks	2m 4s
Calibnet RPC checks	11m 59s
Calibnet stateless mode check	2m 50s
Wallet tests	4m 27s
db-migration-checks	12m 31s
db-migration-checks-car-db	5m 14s
Forest CLI checks	6m 43s
Devnet checks	4m 27s
Calibnet snapshot parity checks	6m 33s
State migrations	4m 43s
	1h 48m 21s

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