[CI] Prevent duplicate PR entries in release notes

[leecalcote]

Current Behavior

Release notes are showing PRs multiple times when they have labels matching different categories (e.g., a PR with both kind/feature and area/docs appeared in both Features and Documentation sections).

Desired Behavior

Configure the release-drafter workflow to ensure that each merged pull request is only included once in the draft release notes.

Implementation

1. Add no-duplicate-categories: true to .github/release-drafter.yml

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This issue was cloned from meshery/meshery#16603

[safiya2610]

@leecalcote I would like to work on this issue if it is still open. Can you please assign this to me.

[safiya2610]

@leecalcote this issue has already been resolved via PR #16604. you can unassign me.