feat: drop ESLint v6 & v7 support (#243)

BREAKING CHANGE: Requires ESLint@^8.57.0 || ^9.0.0

Author: MichaelDeBoey

.github/workflows/ci.yml

@@ -60,14 +60,11 @@ jobs:
                       eslint: 8
                       node: 20
                     # On old ESLint versions
-                    - eslint: 7
-                      node: 20
-                      os: ubuntu-latest
-                    - eslint: 6
+                    - eslint: 8.57.0
                       node: 20
                       os: ubuntu-latest
                     # On the minimum supported ESLint/Node.js version
-                    - eslint: 6.0.0
+                    - eslint: 8.57.0
                       node: 12.22.0
                       os: ubuntu-latest
         runs-on: ${{ matrix.os }}

package.json

@@ -71,7 +71,7 @@
         "warun": "^1.0.0"
     },
     "peerDependencies": {
-        "eslint": "^6.0.0 || ^7.0.0 || >=8.0.0"
+        "eslint": "^8.57.0 || ^9.0.0"
     },
     "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"