Update Spire version and make Dockerfile support multi-arch build #1025

Job	Run time
excludeFmtErrorf / exclude-fmt-errorf	4s
checkgomod / checkgomod	22s
docker-build-and-test / push	1m 19s
excludereplace / excludereplace	2s
gogenerate / gogenerate	13s
golangci-lint / golangci-lint	26s
restrictNSMDeps / restrict-nsm-deps	2s
shellcheck / shellcheck	12s
yamllint / yamllint	9s
	2m 49s

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