Duplicate release notes in multiple cAdvisor releases

[iamspido]

Several cAdvisor GitHub releases appear to contain duplicated release notes.

Examples:

• https://github.com/google/cadvisor/releases/tag/v0.60.2
• https://github.com/google/cadvisor/releases/tag/v0.60.1
• https://github.com/google/cadvisor/releases/tag/v0.60.0
• https://github.com/google/cadvisor/releases/tag/v0.57.0
• https://github.com/google/cadvisor/releases/tag/v0.56.2

Observed behavior:

For multiple releases, the generated release-notes content is duplicated. For example, the following sections appear twice:

• What's Changed
• the list of merged PRs
• New Contributors where applicable
• Full Changelog: ...

Expected behavior:

Each release should contain the generated release notes only once.

This looks like an issue in the release-notes generation or release publishing process rather than an issue with cAdvisor code itself.

It may be worth checking the release automation/workflow to ensure the generated notes are not appended twice when publishing a GitHub Release.