BUILD/MINOR: go.mod: update Go packages #761

Job	Run time
generate-models	1m 13s
generate-specification	41s
HAProxy check commit message	0s
golangci-lint	3m 25s
lint-spec	6s
Build	22s
go mod tidy	6s
Tests	36s
e2e on HAProxy (2.1)	38s
e2e on HAProxy (2.2)	1m 0s
e2e on HAProxy (2.3)	37s
e2e on HAProxy (2.4)	40s
e2e on HAProxy (2.5)	37s
e2e on HAProxy (2.6)	40s
e2e on HAProxy (2.7)	38s
e2e on HAProxy (2.8)	38s
	11m 57s

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