Fix Gemini Code Assist for GitHub config yaml #172887

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@jmagman

The following contributors were found for this pull request:

✅ 0db5f22 Author: @jmagman <ma***r@google.com>
✅ ba91c75 Author: @jtmcdole <j**n@mcdole.org>, <co***u@google.com>
✅ 715c695 Co-Author: <pa****gh@gmail.com>

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