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Issue number: N/A --------- <!-- Please do not submit updates to dependencies unless it fixes an issue. --> <!-- Please try to limit your pull request to one type (bugfix, feature, etc). Submit multiple pull requests if needed. --> ## What is the current behavior? <!-- Please describe the current behavior that you are modifying. --> When the "Update Reference Screenshot" job is run but no new screenshots are generated, the following error is logged: ``` nothing added to commit but untracked files present (use "git add" to track) Error: Process completed with exit code 1. ``` This is happening because there are no files to commit when running `git commit`. Brandy noted that this was confusing since it doesn't actually tell you why there are no files to commit. ## What is the new behavior? <!-- Please describe the behavior or changes that are being added by this PR. --> - If there are no diffs to commit then the update screenshot script will log a message saying that no screenshot diffs were generated. Example: ``` ⚠️ Error: No new screenshots generated ⚠️ This means that there were zero visual diffs when running screenshot tests. Make sure you have pushed any code changes that would result in visual diffs. ``` https://github.com/ionic-team/ionic-framework/actions/runs/6099399582/job/16552017414 ## Does this introduce a breaking change? - [ ] Yes - [x] No <!-- If this introduces a breaking change, please describe the impact and migration path for existing applications below. --> ## Other information <!-- Any other information that is important to this PR such as screenshots of how the component looks before and after the change. -->