Update README #27

Job	Run time
RPC and mobile compilation check	5m 20s
Sqlc check	2m 41s
lint code	49s
cross compilation	19s
check commits	0s
check pinned dependencies (google.golang.org/grpc v1.59.0)	5s
sample configuration check	3m 57s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	4s
run ubuntu itests (btcd, backend=btcd cover=1)	30m 44s
run ubuntu itests (bitcoind, backend=bitcoind cover=1)	40m 49s
run unit tests (btcd unit-cover)	2m 34s
run macOS itest	49m 6s
run unit tests (unit tags="kvdb_etcd")	18m 47s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	38m 31s
run unit tests (unit tags="kvdb_postgres")	17m 17s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling" cover=1)	37m 46s
check release notes updated	5s
run unit tests (unit tags="kvdb_sqlite")	16m 24s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	44m 7s
run unit tests (btcd unit-race)	35m 48s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	43m 52s
run windows itest	32m 6s
run unit tests (unit-module)	1m 38s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	37m 40s
run ubuntu itests (bitcoind-postgres-nativesql, backend=bitcoind dbbackend=postgres nativesql=true)	37m 54s
run ubuntu itests (bitcoind-sqlite-nativesql, backend=bitcoind dbbackend=sqlite nativesql=true)	35m 24s
run ubuntu itests (neutrino, backend=neutrino cover=1)	29m 51s
finish	6s
	9h 23m 44s

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