Bump CAPI to v1.8.8#5371

k8s-ci-robot merged 2 commits intokubernetes-sigs:mainkubernetes-sigs/cluster-api-provider-azure:mainfrom

willie-yao:bump-capi-one-eightwillie-yao/cluster-api-provider-azure:bump-capi-one-eightCopy head branch name to clipboard