Update typespec, core after release

[heaths]

No description provided.

[heaths]

We'll want to wait until after all the other crates are released before we merge this, hence being a draft for now.

[Copilot]

Pull Request Overview

This PR updates version numbers and changelog entries across multiple packages in the SDK to reflect the latest releases. Key changes include:

• Bumping versions in Cargo.toml files for typespec, typespec_client_core, azure_core, azure_core_amqp, and associated workspace dependencies.
• Creating new, unreleased changelog sections for version 0.5.0, 0.6.0, and 0.26.0 in the respective CHANGELOG.md files.
• Updating the "zip" dependency version in the top-level Cargo.toml from 2.6.1 to 4.0.0.

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
sdk/typespec/typespec_macros/Cargo.toml	Updated package version from 0.4.0 to 0.5.0
sdk/typespec/typespec_macros/CHANGELOG.md	Added new unreleased header for version 0.5.0
sdk/typespec/typespec_client_core/Cargo.toml	Updated package version from 0.4.0 to 0.5.0
sdk/typespec/typespec_client_core/CHANGELOG.md	Added new unreleased header for version 0.5.0
sdk/typespec/Cargo.toml	Updated package version from 0.5.0 to 0.6.0
sdk/typespec/CHANGELOG.md	Added new unreleased header for version 0.6.0
sdk/eventhubs/azure_messaging_eventhubs/Cargo.toml	Updated azure_core dependency version from 0.25.0 to 0.26.0
sdk/core/azure_core_amqp/Cargo.toml	Updated package version from 0.4.0 to 0.5.0 and azure_core dependency
sdk/core/azure_core_amqp/CHANGELOG.md	Added new unreleased header for version 0.5.0
sdk/core/azure_core/Cargo.toml	Updated package version from 0.25.0 to 0.26.0
sdk/core/azure_core/CHANGELOG.md	Added new unreleased header for version 0.26.0
Cargo.toml	Updated workspace dependency versions and bumped zip from 2.6.1 to 4.0.0

Comments suppressed due to low confidence (2)

sdk/typespec/typespec_macros/CHANGELOG.md:3

• [nitpick] The new release section for version 0.5.0 is empty; consider adding brief release notes or descriptive change summaries to improve documentation clarity.

## 0.5.0 (Unreleased)

Cargo.toml:124

• The 'zip' dependency has a major version bump from 2.6.1 to 4.0.0; please verify that any breaking changes introduced in zip 4.0.0 are properly handled in the project.

zip = { version = "4.0.0", default-features = false, features = ["deflate"] }

[weshaggard]

/azp run rust - pullrequest

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).