ci(pr-checks): install dependencies before running eslint

Author: jgroth

.github/workflows/pr-checks.yml

@@ -13,6 +13,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - uses: ./.github/actions/set-up-node
+    - run: npm ci
     - run: npm run lint
 
   commitlint: