chore: bump go to 1.18 (#9147)

node/node.go

@@ -69,6 +69,8 @@ type DBContext struct {
 // DBProvider takes a DBContext and returns an instantiated DB.
 type DBProvider func(*DBContext) (dbm.DB, error)
 
+const readHeaderTimeout = 10 * time.Second
+
 // DefaultDBProvider returns a database using the DBBackend and DBDir
 // specified in the ctx.Config.
 func DefaultDBProvider(ctx *DBContext) (dbm.DB, error) {
@@ -1220,6 +1222,7 @@ func (n *Node) startPrometheusServer(addr string) *http.Server {
 				promhttp.HandlerOpts{MaxRequestsInFlight: n.config.Instrumentation.MaxOpenConnections},
 			),
 		),
+		ReadHeaderTimeout: readHeaderTimeout,
 	}
 	go func() {
 		if err := srv.ListenAndServe(); err != http.ErrServerClosed {