BUILD/MINOR: go.mod: update Go packages #465

Job	Run time
HAProxy check commit message	0s
generate-models	55s
generate-specification	41s
golangci-lint	1m 7s
Build	12s
lint-spec	6s
go mod tidy	8s
Tests	27s
e2e on HAProxy (2.1)	52s
e2e on HAProxy (2.2)	53s
e2e on HAProxy (2.3)	59s
e2e on HAProxy (2.4)	52s
e2e on HAProxy (2.5)	44s
e2e on HAProxy (2.6)	50s
e2e on HAProxy (2.7)	51s
e2e on HAProxy (2.8)	45s
	10m 22s

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