.Net: Bump AWSSDK.BedrockAgent from 4.0.0-preview.10 to 4.0.0-preview.12 in /dotnet

[dependabot]

Bumps AWSSDK.BedrockAgent from 4.0.0-preview.10 to 4.0.0-preview.12.

Release notes

Sourced from AWSSDK.BedrockAgent's releases.

4.0.0.0-preview.12 (2025-04-04 17:58 UTC)

• Kinesis (4.0.0.0)
  • Add the bi-directional streaming operation SubscribeToShard.
• LexRuntimeV2 (4.0.0.0)
  • Add the bi-directional streaming operation StartConversation.
• QBusiness (4.0.0.0)
  • Add the bi-directional streaming operation Chat.
• S3 (4.0.0.0)
  • Update remaining value types to be nullable.
• TranscribeStreaming (4.0.0.0)
  • Initial release of the TranscribeStreaming service package.
• Core 4.0.0.0
  • [Breaking Change] Move IEventStreamEvent to Amazon.Runtime.EventStreams namespace from Amazon.Runtime.EventStreams.Internal
  • [Breaking Change] Renamed IEventStream to IEventOutputStream and IEnumerableEventStream to IEnumerableEventOutputStream
  • Add core support for bi directional HTTP 2 service operations. Support is only available in .NET 8 and later.
  • Changed the default value of SSOAWSCredentialsOptions.SupportsGettingNewToken as false and improved error messaging if required SSO options are missing while generating new credentials.
  • Fix EndpointDiscoveryHandler not to fail when a request contains bearer token credentials.
  • Log a warning when ServiceUrl and RegionEndpoint are set at the same time. The SDK will log whichever of the two is used.
  • Remove redundant AWSSignerType attribute from service configuration classes.
  • Support Account ID based endpoints. Account-based endpoints help ensure high performance and scalability by using your AWS account ID to route requests for services that support this feature. For more information visit account id based endpoints on our docs.
  • Update the AWS SDK for .NET to include encoded metrics in the User-Agent header to track which features were used for a given request (for example, which retry behavior and how credentials were resolved)
  • All services packages updated to require new Core

4.0.0.0-preview.11 (2025-03-26 12:13 UTC)

• DynamoDBStreams (4.0.0.0)
  • Update documentation for code generated from DynamoDB Streams models
• S3 (4.0.0.0)
  • Fix a bug where CopyObject wasn't working with some special characters.
• SecurityToken (4.0.0.0)
  • Added async code paths for the SAML and Assume role credentials providers.
• Core 4.0.0.0
  • Add telemetry data for Credentials retrieval
  • Fixed protocol test RestJsonSerializesSparseNullMapValues by adding proper null value handling in sparse map serialization
  • Updated Microsoft.Extensions.AI to 9.3.0-preview.1.25161.3 in the AWSSDK.Extensions.Bedrock.MEAI package
  • Updated credential providers to provide Async version for generating credentials.
  • All services packages updated to require new Core

Commits

• 3870ccb Commit version number update changes
• d13c883 Updated generated files.
• 69db7ba chore: Update versioning
• 123255c Merge pull request #3738 from aws/Business-Metrics-Tracking-UA-2.1
• f4b0d8a Changed the default value of SSOAWSCredentialsOptions.SupportsGettingNewToken...
• b30d4b9 Updates to handle protocolSettings h2 optional.
• c4f47c7 Add SSO_LOGIN feature IDs for SSO login flow requests
• 07513d1 Add DDB_MAPPER feature ID for requests originating from DynamoDBContext (#3734)
• bff37c8 Populate User Agent Details (#3733)
• 873af21 Generate and Send the User Agent String with Business Metrics (#3729)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.