Release 4.0.0: upgrade from opn@6 to open@7, require Node 16

Upgrade grunt-contrib-internal from 6 to 8, which
updates CI from Node 10,12,14 to Node 14,16,18,20.

Fix default connect() hostname to work on Node 18+, where otherwise
CI fails as follows:

> Running "nodeunit:tests" (nodeunit) task
> Testing connect_test.jsFatal error: connect ECONNREFUSED ::1:8000
> Error: connect ECONNREFUSED ::1:8000
>  at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1494:16)

Previously, grunt-contrib-connect was passing empty string or null
down to `connect(,hostname)` to leave the default implicitly handled
by `connect` and Node's built-in `http.Server` class. Then, later,
it was doing a fallback to `0.0.0.0` but this only affected the CLI
output text, not the value passed to `connect()`.

Node 17+ changed per nodejs/node#40702 to
prefer IPv6 loopback when available (`::`) instead of IPv4 loopback
(`0.0.0.0`), unless `0.0.0.0` is explicitly passed.

This was fixed in Node 20, with `http.get` underlying `net` TCP module
implementing "Happy Eyeballs" (same as browsers and curl) which
basically means trying both IPv6 and IPv4. nodejs/node#44731

The workaround is to call `dns.setDefaultResultOrder('ipv4first')`
which ensures that the first try is over IPv4 instead of IPv6.

.github/workflows/test.yml

@@ -1,6 +1,12 @@
 name: Tests
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - "**"
+      - "!dependabot/**"
+  pull_request:
+  workflow_dispatch:
 
 env:
   FORCE_COLOR: 2
@@ -13,15 +19,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [10, 12, 14]
         os: [ubuntu-latest, windows-latest]
+        node: [14, 16, 18, 20]
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
+        with:
+          persist-credentials: false
 
       - name: Set up Node.js
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
 

CHANGELOG

@@ -1,3 +1,8 @@
+v4.0.0:
+  date: 2023-07-13
+  changes:
+    - Requires node 16+.
+    - Updated dependencies.
 v3.0.0:
   date: 2020-07-16
   changes:

README.md

@@ -1,4 +1,4 @@
-# grunt-contrib-connect v3.0.0 [![Build Status](https://github.com/gruntjs/grunt-contrib-connect/workflows/Tests/badge.svg)](https://github.com/gruntjs/grunt-contrib-connect/actions?workflow=Tests)
+# grunt-contrib-connect v4.0.0 [![Build Status](https://github.com/gruntjs/grunt-contrib-connect/workflows/Tests/badge.svg)](https://github.com/gruntjs/grunt-contrib-connect/actions?workflow=Tests)
 
 > Start a connect web server
 
@@ -380,6 +380,7 @@ grunt.registerTask('jasmine-server', 'start web server for jasmine tests in brow
 
 ## Release History
 
+ * 2023-07-13   v4.0.0   Requires node 16+. Updated dependencies.
  * 2020-07-16   v3.0.0   Requires node 10+. Updated dependencies.
  * 2019-09-03   v2.1.0   Update package lock. Allow all configuration options of livereload to be passed through.
  * 2018-09-09   v2.0.0   Drop Node.js < 6 support. Update all dependencies and switch to `node-http2`. Add `secureProtocol` in `httpsOptions`. Fix `open.appName`. Allow passing `serve-index` options.
@@ -412,4 +413,4 @@ grunt.registerTask('jasmine-server', 'start web server for jasmine tests in brow
 
 Task submitted by ["Cowboy" Ben Alman](http://benalman.com)
 
-*This file was generated on Thu Jul 16 2020 10:58:04.*
+*This is a generated file.*