feat: drop Node 12, 14 & 16 support (#204)

BREAKING CHANGE: Requires Node@^18.18.0 || ^20.9.0 || >=21.1.0

.github/workflows/ci.yml

@@ -51,7 +51,7 @@ jobs:
             fail-fast: false
             matrix:
                 eslint: [8]
-                node: [12.22.0, 12, 14.17.0, 14, 16, 18, 19, 20]
+                node: [18.18.0, 18, 20.9.0, 20]
                 os: [ubuntu-latest]
                 include:
                     # On other platforms
@@ -70,7 +70,7 @@ jobs:
                       os: ubuntu-latest
                     # On the minimum supported ESLint/Node.js version
                     - eslint: 6.6.0
-                      node: 12.22.0
+                      node: 18.18.0
                       os: ubuntu-latest
         runs-on: ${{ matrix.os }}
         steps:

README.md

@@ -16,7 +16,7 @@ npm install --save-dev eslint @eslint-community/eslint-plugin-mysticatea
 
 ### Requirements
 
--   Node.js `^12.22.0 || ^14.17.0 || >=16.0.0` or newer versions.
+-   Node.js `^18.18.0 || ^20.9.0 || >=21.1.0`
 -   ESLint `^6.6.0 || ^7.0.0 || ^8.0.0` or newer versions.
 
 ## 📖 Usage

package.json

@@ -70,7 +70,7 @@
         "eslint": "^6.6.0 || ^7.0.0 || ^8.0.0"
     },
     "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
     },
     "funding": "https://opencollective.com/eslint"
 }