feat: drop support for eslint@6

BREAKING CHANGE: Support for ESLint version 6 is removed

Author: SimenB

.github/workflows/nodejs.yml

@@ -68,7 +68,7 @@ jobs:
       fail-fast: false
       matrix:
         node-version: [14.x, 16.x, 18.x]
-        eslint-version: [6, 7, 8]
+        eslint-version: [7, 8]
     runs-on: ubuntu-latest
 
     steps:

package.json

@@ -141,7 +141,7 @@
   },
   "peerDependencies": {
     "@typescript-eslint/eslint-plugin": "^5.0.0",
-    "eslint": "^6.0.0 || ^7.0.0 || ^8.0.0"
+    "eslint": "^7.0.0 || ^8.0.0"
   },
   "peerDependenciesMeta": {
     "@typescript-eslint/eslint-plugin": {

yarn.lock

@@ -4463,7 +4463,7 @@ __metadata:
     typescript: ^4.4.0
   peerDependencies:
     "@typescript-eslint/eslint-plugin": ^5.0.0
-    eslint: ^6.0.0 || ^7.0.0 || ^8.0.0
+    eslint: ^7.0.0 || ^8.0.0
   peerDependenciesMeta:
     "@typescript-eslint/eslint-plugin":
       optional: true