Loosen minimum Node.js to 16 again

Since this is a simple library if it works in 16
why force people to upgrade.
I will still be developing at verson 20 but
the test matrix will cover the previous LTS versions

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18, 20, 22]
+        node-version: [16, 18, 20, 22]
 
     steps:
     - uses: actions/checkout@v2

CHANGELOG.md

@@ -1,7 +1,6 @@
 # 9.0.0
 
 - Update axe-core to version 4.9.1 - thanks [@1Copenut](https://github.com/1Copenut) and [@longmatthewh](https://github.com/longmatthewh).
-- Update minimum Node.js version to 20 to align with LTS - https://nodejs.org/en/about/previous-releases
 
 # 8.0.0
 

package.json

@@ -23,7 +23,7 @@
   "author": "Nick Colley",
   "license": "MIT",
   "engines": {
-    "node": ">= 20.0.0"
+    "node": ">= 16.0.0"
   },
   "dependencies": {
     "axe-core": "4.9.1",