docs: Add upgrade notice and migration entry for changes to `GeneratedAnswer` and `ExtractedAnswer` - #11896

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julian-risch merged 2 commits into

mainfrom

reapply-11805-v3-breaking

Jul 9, 2026

Commits on Jul 7, 2026

Add upgrade notice and migration entry
sjrl
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Commits on Jul 9, 2026

Merge branch 'main' of github.com:deepset-ai/haystack into reapply-11805-v3-breaking
sjrl
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