fix: go CVE #752

# to view logs

Run time

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Job	Run time
build container image	2m 47s
lint	3m 7s
embeded	2m 47s
crossbuild (freebsd, amd64)	35s
lintdoc	36s
crossbuild (openbsd, amd64)	36s
unit	2m 32s
unit386	2m 21s
crossbuild (darwin, amd64)	35s
crossbuild (windows, amd64)	38s
evpn	1m 14s
flowspec	1m 0s
as2	48s
global-policy	1m 22s
graceful-restart	5m 18s
ibgp	2m 8s
ipv4-v6	1m 15s
malformed	56s
router	3m 44s
route-refector	1m 59s
rs-policy-grpc	56s
addpath	58s
aspath	1m 58s
confederation	2m 13s
llgr	3m 52s
malformed-handling	56s
routeserver1	1m 47s
routeserver2	57s
rs-policy	38s
rtc	2m 52s
softreset	1m 2s
unnumbered	58s
vrf-neighbor1	1m 4s
zebra	1m 44s
vrf-neighbor2	1m 40s
mup	1m 11s
zapi-v3	1m 1s
zapi-v3-multipath	1m 15s
zebra-nht	3m 12s
	1h 6m 32s