[fix] ok-to-test: Add job result to status comment (#414)

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Instead of appending all integration tests comments, replace old comments (GH still preserves comment history). Furthermore, add the job result to the comment.

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## Test Plan
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* [ ] acceptance tests
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* [ ] …

## References
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*

.github/workflows/integration.yml

@@ -84,7 +84,7 @@ jobs:
           issue-number: ${{ github.event.pull_request.number || github.event.client_payload.pull_request.number }}
           comment-id: ${{ steps.fc.outputs.comment-id }}
           body: |
-            Integration tests ran for [${{ github.event.client_payload.slash_command.args.named.sha || github.event.pull_request.head.sha }}](https://github.com/chanzuckerberg/terraform-provider-snowflake/actions/runs/${{ github.run_id }})
+            Integration tests ${{ job.status }} for [${{ github.event.client_payload.slash_command.args.named.sha || github.event.pull_request.head.sha }}](https://github.com/chanzuckerberg/terraform-provider-snowflake/actions/runs/${{ github.run_id }})
 
       - name: set fork job status
         uses: actions/github-script@v3