Update dependency Azure.Core to 1.61.0

[dependencyupdates]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Azure.Core (source)	1.60.0 → 1.61.0

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Release Notes

Azure/azure-sdk-for-net (Azure.Core)

v1.61.0

Compare Source

1.61.0 (2026-07-30)

Features Added

• Added AzureAuthorityHosts.AzureBleuCloud (https://login.sovcloud-identity.fr/), the Microsoft Entra authority host for Bleu Cloud, the national partner cloud for France. Interactive credentials' Authenticate methods now also resolve the default Azure Resource Manager scope for Bleu Cloud.

Bugs Fixed

• Fixed an issue where response content logging could emit more bytes than were actually read when a non-buffered (streaming) response was read into a buffer larger than the response body. Previously, when the read began at offset 0, the entire caller-supplied buffer was logged — including the bytes past the response payload, which for a pooled buffer contain unrelated in-process content — and the configured LoggedContentSizeLimit was not applied. The logging policy now logs only the bytes that were read. (#​61399)
• Fixed an issue where RequestFailedException could throw a secondary ArgumentNullException while formatting a failed response that had a text content-type header but an empty body, masking the actual service failure. The exception now preserves the original HTTP status, reason phrase, and headers, and no longer formats empty response content.
• Fixed AzureCliCredential to not pass both --tenant and --subscription flags to the Azure CLI, as the CLI rejects this combination. When a tenant is requested (for example, via challenge-based authentication) it now takes precedence and --subscription is omitted; --subscription is used only when no tenant is requested. (#​58949)

Other Changes

• Added azure-deprecating to the default list of allowed (non-redacted) headers in DiagnosticsOptions to support deprecating behavior notification.

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