fix: create env for sign-as-la test

Author: spacesailor24

.github/workflows/tests.yml

@@ -129,6 +129,10 @@ jobs:
           echo "ETHEREUM_PRIVATE_KEY=${{ secrets.ETHEREUM_PRIVATE_KEY }}" > $GITHUB_WORKSPACE/solana-openai/nodejs/.env
           echo "OPENAI_API_KEY=${{ secrets.OPENAI_API_KEY }}" >> $GITHUB_WORKSPACE/solana-openai/nodejs/.env
 
+      - name: Create .env file for sign-as-action/nodejs tests
+        run: |
+          echo "ETHEREUM_PRIVATE_KEY=${{ secrets.ETHEREUM_PRIVATE_KEY }}" > $GITHUB_WORKSPACE/sign-as-action/nodejs/.env
+
       - name: Run Tests in Node.js
         run: yarn test:node
         continue-on-error: false