dev: update linter (#1728)

- gofumpt everything
- fix TLS MinVersion to be at least 1.2
- add octal syntax
- remove newlines
- fix potential decompression bomb in ecjson
- remove implicit memory aliasing in for loops.

Signed-off-by: Bobby DeSimone <bobbydesimone@gmail.com>

internal/controlplane/xds_clusters.go

@@ -41,7 +41,8 @@ func (srv *Server) buildClusters(options *config.Options) []*envoy_config_cluste
 	clusters = append(clusters, buildInternalCluster(options, authzURL.Host, authzURL, true))
 
 	if config.IsProxy(options.Services) {
-		for _, policy := range options.Policies {
+		for i := range options.Policies {
+			policy := options.Policies[i]
 			clusters = append(clusters, buildPolicyCluster(options, &policy))
 		}
 	}