chore(CI): add tests for ESLint 8

.github/workflows/ci.yml

@@ -11,8 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        eslint-version: [7.x]
-        node-version: [16.x, 14.x, 12.x]
+        eslint-version: ['^8.0.0-0', 7]
+        node-version: [16, 14, 12]
 
     steps:
       - uses: actions/checkout@v2

package.json

@@ -31,22 +31,22 @@
     "prettier-linter-helpers": "^1.0.0"
   },
   "peerDependencies": {
-    "eslint": ">=7.28.0",
+    "eslint": "^7.28.0 || ^8.0.0",
     "prettier": ">=2.0.0"
   },
   "devDependencies": {
-    "@graphql-eslint/eslint-plugin": "^2.0.1",
+    "@graphql-eslint/eslint-plugin": "^2.0.2",
     "@not-an-aardvark/node-release-script": "^0.1.0",
-    "eslint": "^7.28.0",
+    "eslint": "^8.0.0",
     "eslint-config-not-an-aardvark": "^2.1.0",
-    "eslint-config-prettier": "^6.0.0",
-    "eslint-plugin-eslint-plugin": "^2.0.0",
-    "eslint-plugin-node": "^8.0.0",
-    "eslint-plugin-self": "^1.1.0",
-    "graphql": "^15.5.1",
-    "mocha": "^6.0.0",
-    "prettier": "^2.3.0",
-    "vue-eslint-parser": "^6.0.0"
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-eslint-plugin": "^4.0.0-0",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-self": "^1.2.1",
+    "graphql": "^15.5.2",
+    "mocha": "^6.2.3",
+    "prettier": "^2.3.2",
+    "vue-eslint-parser": "^7.10.0"
   },
   "peerDependenciesMeta": {
     "eslint-config-prettier": {