feat: drop ESLint v4 & v5 support (#18)

BREAKING CHANGE: Requires ESLint@>=6

Author: MichaelDeBoey

.github/workflows/ci.yml

@@ -57,14 +57,8 @@ jobs:
           - eslint: 6
             node: 18
             os: ubuntu-latest
-          - eslint: 5
-            node: 18
-            os: ubuntu-latest
-          - eslint: 4
-            node: 18
-            os: ubuntu-latest
           # On the minimum supported ESLint/Node.js version
-          - eslint: 4.19.1
+          - eslint: 6.0.0
             node: 12.22.0
             os: ubuntu-latest
     runs-on: ${{ matrix.os }}

docs/README.md

@@ -27,7 +27,7 @@ npm install --save-dev eslint @eslint-community/eslint-plugin-eslint-comments
 
 ::: tip Requirements
 - Node.js `^12.22.0 || ^14.17.0 || >=16.0.0`
-- ESLint `4.19.1` or newer.
+- ESLint `^6.0.0 || ^7.0.0`
 :::
 
 ## 📖 Usage

package.json

@@ -10,7 +10,7 @@
     "lib"
   ],
   "peerDependencies": {
-    "eslint": ">=4.19.1"
+    "eslint": "^6.0.0 || ^7.0.0"
   },
   "dependencies": {
     "escape-string-regexp": "^1.0.5",