[sdk generation pipeline] Fix changelog duplication when re-generating management plane SDK #45156
+122
−0
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Fix
When re-generating a management plane SDK, the changelog generation pipeline inserts a new section at the top of CHANGELOG.md with a placeholder version. The version update step then replaces the first version line with the actual version, but the previous section with the same version number remains, creating duplicate content.
Fixes: Azure/azure-sdk-tools#12425