refactor(engines): remove package.json engines restriction

.github/workflows/test.yml

@@ -33,20 +33,14 @@ jobs:
   test:
     name: Node Tests + Coverage
     runs-on: ubuntu-latest
-    continue-on-error: ${{ matrix.experimental || false }}
     strategy:
       fail-fast: false
       matrix:
         node-version:
-          - 12.19.0
           - 12
-          - 14.15.0
           - 14
-          - 16.13.0
           - 16
-        include:
-          - experimental: true
-            node-version: '>=17'
+          - 18
     steps:
       - name: Checkout
         uses: actions/checkout@master

README.md

@@ -87,9 +87,7 @@ specific middlewares. Those can however be built using the exposed API, one such
 
 ## Install
 
-Node.js LTS releases Codename Erbium (starting with ^12.19.0) and newer LTS releases are supported. 
-This means  ^12.19.0 (Erbium), ^14.15.0 (Fermium), and ^16.13.0 (Gallium). Future LTS releases will
-be added to this list as they're released.
+Node.js LTS releases Codename Erbium (starting with ^12.19.0) and newer LTS releases are supported.
 
 ```console
 npm install openid-client

package.json

@@ -71,9 +71,6 @@
     "sinon": "^9.2.0",
     "timekeeper": "^2.2.0"
   },
-  "engines": {
-    "node": "^12.19.0 || ^14.15.0 || ^16.13.0"
-  },
   "standard-version": {
     "scripts": {
       "postchangelog": "sed -i '' -e 's/### \\[/## [/g' CHANGELOG.md"
@@ -102,7 +99,7 @@
       {
         "type": "refactor",
         "section": "Refactor",
-        "hidden": true
+        "hidden": false
       },
       {
         "type": "perf",