Increment versions for keyvault/azure-resourcemanager-keyvault releases

[azure-sdk]

Increment package versions for keyvault/azure-resourcemanager-keyvault releases

[Copilot]

Pull request overview

This PR advances the Key Vault management library release train by bumping the azure-resourcemanager-keyvault module to the next unreleased beta version, and updates several internal test/aggregate POMs to consume the newly released stable Key Vault version.

Changes:

• Bump azure-resourcemanager-keyvault package version to 2.56.0-beta.1 and add a new unreleased CHANGELOG section.
• Update multiple modules’ azure-resourcemanager-keyvault dependency from 2.54.2 to 2.55.0.
• Update eng/versioning/version_client.txt to reflect 2.55.0 -> 2.56.0-beta.1.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
sdk/resourcemanager/azure-resourcemanager/pom.xml	Updates Key Vault management dependency to 2.55.0.
sdk/network/azure-resourcemanager-network/pom.xml	Updates test dependency on Key Vault management to 2.55.0.
sdk/machinelearning/azure-resourcemanager-machinelearning/pom.xml	Updates test dependency on Key Vault management to 2.55.0.
sdk/keyvault/azure-resourcemanager-keyvault/pom.xml	Bumps Key Vault management module version to 2.56.0-beta.1.
sdk/keyvault/azure-resourcemanager-keyvault/CHANGELOG.md	Adds the 2.56.0-beta.1 (Unreleased) section.
sdk/compute/azure-resourcemanager-compute/pom.xml	Updates test dependency on Key Vault management to 2.55.0.
sdk/chaos/azure-resourcemanager-chaos/pom.xml	Updates test dependency on Key Vault management to 2.55.0.
sdk/appservice/azure-resourcemanager-appservice/pom.xml	Updates Key Vault management dependency to 2.55.0.
sdk/appplatform/azure-resourcemanager-appplatform/pom.xml	Updates test dependency on Key Vault management to 2.55.0.
eng/versioning/version_client.txt	Updates the version mapping for Key Vault management to 2.55.0 / 2.56.0-beta.1.

[Copilot]

version_client.txt is updated to reflect the Key Vault management library moving from 2.55.0 to 2.56.0-beta.1, but the Azure SDK BOM still pins com.azure.resourcemanager:azure-resourcemanager-keyvault to 2.54.2 (see sdk/boms/azure-sdk-bom/pom.xml around the azure-resourcemanager-keyvault entry). This will cause BOM consumers to keep resolving the older Key Vault version even after this release/version bump. Update the BOM entry to 2.55.0 (or the intended released version) to keep it consistent with this versioning change.