BUILD/MINOR: go.mod: update Go packages #519

Job	Run time
generate-specification	47s
generate-models	1m 1s
HAProxy check commit message	0s
golangci-lint	1m 0s
go mod tidy	17s
license-check	39s
Build	25s
lint-spec	8s
Tests	2m 45s
e2e on HAProxy (2.1)	40s
e2e on HAProxy (2.2)	41s
e2e on HAProxy (2.3)	41s
e2e on HAProxy (2.4)	42s
e2e on HAProxy (2.5)	41s
e2e on HAProxy (2.6)	42s
e2e on HAProxy (2.7)	43s
e2e on HAProxy (2.8)	43s
	12m 35s

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