Update GitHub Actions workflow to use INKEEP_API_KEY environment variable consistently

Author: aravindputrevu

.github/workflows/node.js.yaml

@@ -14,6 +14,8 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    env:
+      INKEEP_API_KEY: ${{ secrets.INKEEP_API_KEY }}
 
     steps:
       - uses: actions/checkout@v4
@@ -27,7 +29,7 @@ jobs:
       - run: pnpm install --frozen-lockfile --strict-peer-dependencies
       - run: pnpm run build
         env:
-          API_KEY: ${{ secrets.INKEEP_API_KEY }}
+          INKEEP_API_KEY: ${{ secrets.INKEEP_API_KEY }}
       - run: pnpm run lint
 
   fix: