chore: use math.Int instead of math.Int and apply linting (#12702)

* linting round

* fix changelog

* revert docs changes

* Update CHANGELOG.md

* revert an accidental change to security.md

* Update simapp/integration/client/grpc/tmservice/service_test.go

Co-authored-by: Julien Robert <julien@rbrt.fr>

server/grpc/grpc_web.go

@@ -25,8 +25,9 @@ func StartGRPCWeb(grpcSrv *grpc.Server, config config.Config) (*http.Server, err
 
 	wrappedServer := grpcweb.WrapServer(grpcSrv, options...)
 	grpcWebSrv := &http.Server{
-		Addr:    config.GRPCWeb.Address,
-		Handler: wrappedServer,
+		Addr:              config.GRPCWeb.Address,
+		Handler:           wrappedServer,
+		ReadHeaderTimeout: 500000000, // added because G112: Potential Slowloris Attack because ReadHeaderTimeout is not configured in the http.Server
 	}
 
 	errCh := make(chan error)