Bump Microsoft.Data.SqlClient to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Microsoft.Data.SqlClient (source)	6.1.4 → 7.0.0

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Release Notes

dotnet/sqlclient (Microsoft.Data.SqlClient)

v7.0.0

This update brings the below changes over the previous preview release:

Also released as part of this milestone:

• Released Microsoft.Data.SqlClient.Extensions.Abstractions 1.0.0-preview1.26064.3. See release notes.
• Released Microsoft.Data.SqlClient.Extensions.Azure 1.0.0-preview1.26064.3. See release notes.
• Released Microsoft.Data.SqlClient.Extensions.Logging 1.0.0-preview1.26064.3. See release notes.
• Released Microsoft.Data.SqlClient.AlwaysEncrypted.AzureKeyVaultProvider 7.0.0-preview1.26064.3. See release notes.

Changed

• Breaking: Removed Azure dependencies from the core package. Entra ID authentication (ActiveDirectoryAuthenticationProvider and related types) has been extracted into a new Microsoft.Data.SqlClient.Extensions.Azure package. The core Microsoft.Data.SqlClient package no longer depends on Azure.Core, Azure.Identity, or their transitive dependencies. Applications using Entra ID authentication must now install Microsoft.Data.SqlClient.Extensions.Azure separately.
  (#​1108,
  #​3680,
  #​3902,
  #​3904,
  #​3908,
  #​3917,
  #​3982,
  #​3978,
  #​3986)

• Introduced Microsoft.Data.SqlClient.Extensions.Abstractions and Microsoft.Data.SqlClient.Extensions.Logging packages to support the extensions model.
  (#​3626,
  #​3628,
  #​3967)

• Updated UserAgent feature to use a pipe-delimited format.
  (#​3826)

• Minor improvements to Managed SNI tracing.
  (#​3859)

• Reverted public visibility of internal interop enums that were accidentally made public during the project merge.
  (#​3900)

• Performance improvements:
  (#​3791,
  #​3772)

• Codebase merge and cleanup:
  (#​3773,
  #​3818,
  #​3836,
  #​3810,
  #​3837,
  #​3963)

Added

• Added SspiContextProvider abstract class and SqlConnection.SspiContextProvider property, enabling custom SSPI authentication for scenarios like cross-domain Kerberos negotiation and NTLM username/password authentication.
  (#​2253,
  #​2494)

• Added SqlConfigurableRetryFactory.BaselineTransientErrors static property exposing the default transient error codes list as a ReadOnlyCollection<int>.
  (#​3903)

• Added new app context switch Switch.Microsoft.Data.SqlClient.EnableMultiSubnetFailoverByDefault to set MultiSubnetFailover=true by default in connection strings.
  (#​3841)

• Added support for enhanced routing, a TDS feature extension that allows the server to redirect connections to a specific server and database, enabling Azure SQL Hyperscale read replica load balancing.
  (#​3641,
  #​3969,
  #​3970,
  #​3973)

Fixed

• Fixed ExecuteScalar to propagate errors when the server sends data followed by an error token.
  (#​3912)

• Fixed NullReferenceException in SqlDataAdapter when processing batch scenarios where certain SQL RPC calls may not include system parameters.
  (#​3857)

• Fixed reading of multiple app context switches from a single AppContextSwitchOverrides configuration field.
  (#​3960)

• Fixed a connection performance regression where SPN generation was triggered for non-integrated authentication modes (e.g., SQL authentication) on the native SNI path.
  (#​3929)

• Fixed an edge case in TdsParserStateObject.TryReadPlpBytes where zero-length reads returned null instead of an empty array.
  (#​3872)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.01%. Comparing base (17e5779) to head (7f6c98c).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #547   +/-   ##
=======================================
  Coverage   65.01%   65.01%           
=======================================
  Files          59       59           
  Lines        1941     1941           
  Branches      381      381           
=======================================
  Hits         1262     1262           
  Misses        568      568           
  Partials      111      111           

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