BUILD/MINOR: go.mod: update Go packages #665

Job	Run time
HAProxy check commit message	0s
generate-models	1m 17s
generate-specification	45s
go mod tidy	9s
Build	28s
golangci-lint	3m 19s
lint-spec	9s
Tests	31s
e2e on HAProxy (2.1)	46s
e2e on HAProxy (2.2)	44s
e2e on HAProxy (2.3)	40s
e2e on HAProxy (2.4)	42s
e2e on HAProxy (2.5)	42s
e2e on HAProxy (2.6)	40s
e2e on HAProxy (2.7)	44s
e2e on HAProxy (2.8)	41s
	12m 17s

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