feat: Add sample encryption key to CI step

.github/workflows/ci.yml

@@ -39,7 +39,11 @@ jobs:
       - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
       - run: echo "🖥️ The workflow is now ready to test your code on the runner."
       - run: yarn --frozen-lockfile && yarn lerna bootstrap
-      - run: cd packages/backend && yarn start
+      - run: yarn --frozen-lockfile && yarn lerna bootstrap
+      - run: cd packages/backend
+      - run: yarn start
+        env:
+          ENCRYPTION_KEY: sample_encryption_key
       - run: echo "🍏 This job's status is ${{ job.status }}."
   build-web:
     runs-on: ubuntu-latest