BUILD/MINOR: go.mod: update Go packages #464

Job	Run time
generate-specification	43s
HAProxy check commit message	0s
generate-models	1m 6s
Build	21s
golangci-lint	1m 27s
go mod tidy	11s
lint-spec	8s
Tests	39s
e2e on HAProxy (2.1)	37s
e2e on HAProxy (2.2)	38s
e2e on HAProxy (2.3)	43s
e2e on HAProxy (2.4)	39s
e2e on HAProxy (2.5)	43s
e2e on HAProxy (2.6)	47s
e2e on HAProxy (2.7)	37s
e2e on HAProxy (2.8)	38s
	9m 57s

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