test: run integration test with API key after local tests.

Author: aws-gopher

.github/workflows/ci.yaml

@@ -24,4 +24,7 @@ jobs:
       - run: go vet ./...
       - uses: dominikh/staticcheck-action@v1
         with: { install-go: false }
-      - run: go test -v ./...
+      - run: go test -v .
+      - run: go test -v -tags integration ./test
+        env:
+          UNSTRUCTURED_API_KEY: ${{ secrets.UNSTRUCTURED_API_KEY }}