deps: update polykey to 1.18.0 #196

Job	Run time
Build / Pull Request	5s
Check / Build	19s
Check / Lint	27s
Check / Dry Run	1m 30s
Check / Matrix	2s
Check / Test (tests/agent)	1m 27s
Check / Test (tests/audit)	36s
Check / Test (tests/identities)	1m 6s
Check / Test (tests/keys)	53s
Check / Test (tests/nat)	28s
Check / Test (tests/nodes)	1m 5s
Check / Test (tests/notifications)	42s
Check / Test (tests/secrets)	3m 10s
Check / Test (tests/utils)	24s
Check / Test (tests/vaults)	1m 3s
Check / Test (tests/bootstrap.test.ts)	31s
Check / Test (tests/polykey.test.ts)	20s
Check / Test (tests/sessions.test.ts)	34s
Check / Test (tests/utils.retryAuthentication.test.ts)	19s
Check / Test (tests/utils.test.ts)	19s
Check / Coverage	11s
Integration / Merge	5s
	15m 36s

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