BUILD/MINOR: go.mod: update Go packages #480

Job	Run time
generate-specification	42s
HAProxy check commit message	0s
generate-models	1m 8s
go mod tidy	7s
lint-spec	9s
Build	24s
golangci-lint	1m 2s
Tests	33s
e2e on HAProxy (2.1)	41s
e2e on HAProxy (2.2)	37s
e2e on HAProxy (2.3)	41s
e2e on HAProxy (2.4)	41s
e2e on HAProxy (2.5)	37s
e2e on HAProxy (2.6)	37s
e2e on HAProxy (2.7)	37s
e2e on HAProxy (2.8)	38s
	9m 14s

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