style: change the name to NotarySigningKeyProperties #159

Job	Run time
Build and test (components/integration-tests)	1m 13s
Build and test (components/uid-mux)	41s
Build and test (components/cipher)	1m 45s
Build and test (components/universal-hash)	1m 6s
Build and test (components/aead)	1m 12s
Build and test (components/key-exchange)	57s
Build and test (components/point-addition)	53s
Build and test (components/prf)	1m 53s
Build and test (components/tls)	2m 1s
Build and test (tlsn)	3m 30s
Build and test (notary-server)	3m 30s
	18m 41s

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