chore: incoming 1673 changelog entry

Author: ksylvan

cmd/generate_changelog/incoming/1673.txt

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+### PR [#1673](https://github.com/danielmiessler/Fabric/pull/1673) by [ksylvan](https://github.com/ksylvan): Add Support for Claude Opus 4.1 Model
+
+- Add Claude Opus 4.1 model support
+- Upgrade anthropic-sdk-go from v1.4.0 to v1.7.0
+- Fix temperature/topP parameter conflict for models
+- Move changelog generation to separate workflow job
+- Add dedicated update_release_notes job configuration