chore: Update Java SDK to latest openapi spec#41

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nmorgan-cb wants to merge 5 commits intomainfrom

nm/sdk_updates_02_26

Commits on Feb 17, 2026

Commits on Feb 18, 2026

fix CHANGELOG accuracy: move post_trade_credit to Fixed, remove pre-existing enums, add GoogleTypeDate
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Commits on Feb 21, 2026

address review: use primitive boolean instead of Boolean wrapper
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