GH-44050: [CI][Integration] Execute integration test again (#44051)

### Rationale for this change

`>` in YAML removes newlines.

### What changes are included in this PR?

Use `|` instead of `>` to keep newlines.

### Are these changes tested?

Yes.

### Are there any user-facing changes?

No.
* GitHub Issue: #44050

Authored-by: Sutou Kouhei <kou@clear-code.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>

.github/workflows/integration.yml

@@ -100,7 +100,7 @@ jobs:
         env:
           ARCHERY_DOCKER_USER: ${{ secrets.DOCKERHUB_USER }}
           ARCHERY_DOCKER_PASSWORD: ${{ secrets.DOCKERHUB_TOKEN }}
-        run: >
+        run: |
           source ci/scripts/util_enable_core_dumps.sh
           archery docker run \
             -e ARCHERY_DEFAULT_BRANCH=${{ github.event.repository.default_branch }} \