breaking: drop ESLint v6 support (#257)

Author: bmish

.github/workflows/main.yml

@@ -37,17 +37,6 @@ jobs:
       - run: npm install
       - run: npm run lint
 
-  eslint6:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-node@v3
-      with:
-        node-version: "18.x"
-    - run: npm install
-    - run: npm install --save-dev eslint@6
-    - run: npm test
-
   eslint7:
     runs-on: ubuntu-latest
     steps:

package.json

@@ -70,7 +70,7 @@
     "typescript": "^4.4.3"
   },
   "peerDependencies": {
-    "eslint": ">=6.0.0"
+    "eslint": ">=7.0.0"
   },
   "engines": {
     "node": "^12.22.0 || ^14.17.0 || >=16.0.0"