Build: test on eslint v8

Author: aladdin-add

.github/workflows/main.yml

@@ -22,7 +22,8 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
-      - run: npm install
+      # TODO: remove "--force" once eslint v8 released
+      - run: npm install --force
       - run: npm test
 
   lint:

package.json

@@ -42,7 +42,7 @@
     "@not-an-aardvark/node-release-script": "^0.1.0",
     "chai": "^4.1.0",
     "dirty-chai": "^2.0.1",
-    "eslint": "^7.9.0",
+    "eslint": "8.0.0-beta.2",
     "eslint-config-not-an-aardvark": "^2.1.0",
     "eslint-plugin-markdown": "^2.0.1",
     "eslint-plugin-node": "^11.1.0",