Bump github.com/coreos/go-iptables from 0.7.0 to 0.8.0 #33127

Job	Run time
Check whether tests need to be run based on diff	16s
Build Antrea image to be used for Kind e2e tests	9m 34s
Build Flow Aggregator image to be used for Kind e2e tests	2m 12s
E2e tests on a Kind cluster on Linux with all features enabled	54m 17s
E2e tests on a Kind cluster on Linux with non default values (proxyAll=true, LoadBalancerMode=DSR...	44m 2s
E2e tests on a Kind cluster on Linux for Flow Visibility	25m 32s
E2e tests on a Kind cluster on Linux	41m 44s
E2e tests on a Kind cluster on Linux (hybrid)	35m 50s
E2e tests on a Kind cluster on Linux (noEncap)	36m 42s
NetworkPolicy conformance tests on a Kind cluster on Linux	8m 0s
Antrea-native (VLAN) secondary network tests on a Kind cluster on Linux	3m 3s
Test installation using 'antctl check' command	4m 57s
API compatible with client version N-2	8m 17s
Upgrade from Antrea version N-1	8m 51s
API compatible with client version N-1	8m 31s
Upgrade from Antrea version N-2	8m 55s
Validate metrics in Prometheus document match running deployment's	2m 4s
Delete uploaded images	3s
	5h 2m 50s

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