SDK Diff Baseline Updater Tool not Publishing PRs for API diffs

[Example pipeline run](https://dev.azure.com/dnceng/internal/_build/results?buildId=2832791&view=logs&j=8e2906d7-a694-5f79-472d-c7a61446086d&t=81334588-2501-5097-4b75-17a53da5c2f6)

The api diff tests failed, but the PR updater tool did not create a PR.