update certificates in test cases #2026

Job	Run time
golangci-lint	13s
golangci-lint	17s
Test build flags	1m 31s
Test build flags	1m 31s
Build Linux packages (amd64, ubuntu:18.04, latest, amd64)	2m 40s
Build Linux packages (amd64, ubuntu:18.04, latest, amd64)	2m 32s
Build Linux packages (aarch64, ubuntu18.04, latest, arm64)	15m 21s
Build Linux packages (aarch64, ubuntu18.04, latest, arm64)	16m 16s
Build Linux packages (ppc64le, ubuntu18.04, latest, ppc64le)	14m 47s
Build Linux packages (ppc64le, ubuntu18.04, latest, ppc64le)	15m 22s
Test and deploy (1.20, ubuntu-latest, true)	14m 18s
Test and deploy (1.20, ubuntu-latest, true)	15m 29s
Test with PgSQL/MySQL/Cockroach	20m 2s
Test with PgSQL/MySQL/Cockroach	19m 56s
Build Linux packages (armv7, ubuntu18.04, latest, arm7)	16m 34s
Build Linux packages (armv7, ubuntu18.04, latest, arm7)	17m 14s
Test and deploy (1.20, macos-latest, true)	14m 42s
Test and deploy (1.20, macos-latest, true)	11m 17s
Test and deploy (1.20, windows-latest, false)	24m 40s
Test and deploy (1.20, windows-latest, false)	20m 34s
	4h 5m 16s

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