Merge pull request #3582 from k8s-infra-cherrypick-robot/cherry-pick-3580-to-release-1.8

[release-1.8] add Go version to netlify config

Author: k8s-ci-robot

netlify.toml

@@ -3,6 +3,9 @@
     command = "./docs/book/install-and-build.sh"
     publish = "docs/book/book"
 
+[build.environment]
+    GO_VERSION = "1.20"
+
 # Standard Netlify redirects
 [[redirects]]
     from = "https://master--kubernetes-sigs-cluster-api-provider-azure.netlify.com/*"