Release v1.23.1

[YunchuWang]

Summary

What changed?

Why is this change needed?

Issues / work items

• Resolves #
• Related #

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Project checklist

• Release notes are not required for the next release
  • Otherwise: Notes added to release_notes.md
• Backport is not required
  • Otherwise: Backport tracked by issue/PR #issue_or_pr
• All required tests have been added/updated (unit tests, E2E tests)
• Breaking change?
  • If yes:
    • Impact:
    • Migration guidance:

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• Yes, AI helped write parts of this PR (e.g., GitHub Copilot)
• Yes, an AI agent generated most of this PR

If AI was used:

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• I reviewed edge cases/failure paths (timeouts, retries, cancellation, exceptions)
• I reviewed concurrency/async behavior
• I checked for unintended breaking or behavior changes

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Testing

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• Result: Passed / Failed (link logs if failed)

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Notes for reviewers

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[Copilot]

Pull request overview

Updates the repo’s release versioning metadata and changelog to publish the v1.23.1 release of the Durable Task .NET SDK.

Changes:

• Bump VersionPrefix to 1.23.1 for packaging/versioning.
• Add a new v1.23.1 section to CHANGELOG.md with included PR highlights.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
eng/targets/Release.props	Updates VersionPrefix to 1.23.1 for the release build/package version.
CHANGELOG.md	Adds the v1.23.1 changelog section summarizing included changes.

[Copilot]

There are currently two consecutive blank lines between the ## Unreleased header and the ## v1.23.1 section. For consistency with the rest of this file (e.g., the single blank line separating v1.23.1 and v1.23.0), consider reducing this to a single blank line.

Suggested change