v1.4 SDK Release

What's Changed

• Users/mbarbour/run release by @MattB-msft in #524
• AgentUserAuthorization now accepts Event tokens/response by @tracyboehrer in #529
• Handle null scopes in MsalAuth.cs more robustly by @MattB-msft in #467
• Agentic flag was not being passed to RouteList during AddRoute by @tracyboehrer in #535
• UrlEncode the convId for ReplyToActivity and SendToConversation by @tracyboehrer in #532
• Only set Expiration in TokenResponse if non-default value by @MattB-msft in #544
• Dependency updates by @tracyboehrer in #552
• Exposed BlobsTranscriptStore constructor that accepts a BlobContainerClient by @tracyboehrer in #559
• Removed duplicate per-route OAuth in OBO sample by @tracyboehrer in #560
• Added agentic route flag to Teams AgentExtension by @tracyboehrer in #561
• Model code quality by @tracyboehrer in #574
• Reverted removal of capturing Activity.Id during TurnContext.SendActivities by @tracyboehrer in #589
• Move TeamsAttachmentDownloader to Core by @tracyboehrer in #492
• Add Entity assembly attribute for serialization support by @tracyboehrer in #593
• dependabot rollup by @tracyboehrer in #602
• Fixed UserAuthorization.ExchangeToken using cached token for subsequent exchanges by @tracyboehrer in #622
• Dependabot rollup by @tracyboehrer in #641
• Obsolete AgentApplicationOptions.Adapter by @tracyboehrer in #639
• Users/mbarbour/skip azdev ops build on dependabot by @MattB-msft in #654
• AAU using ConfidentialClientApplicationBuilder by @tracyboehrer in #626
• Validate path characters in zip entry names - CodeQL detection by @MattB-msft in #657
• StreamingResponse.StreamId public by @tracyboehrer in #631
• Clone Diagnostics.Activity.Current for background queue by @tracyboehrer in #630
• TokenResponse.IsExchangeable value dropped on initial SSO exchange by @tracyboehrer in #662
• Render JWT details as Adaptive Card in agentic reply by @MattB-msft in #688
• Update authority URL regex to handle GUID tenant IDs by @MattB-msft in #690
• Added original AgentExtension.AddRoute back for binary compat by @tracyboehrer in #699
• Update HeaderPropagation assembly to use source generator by @sw-joelmut in #711
• Add CopilotStudioSubscriberClient SSE sample and SDK updates by @MattB-msft in #702
• Added MessageReaction.Properties by @tracyboehrer in #716
• Bump DotNet SDK verison to 8.0.418 by @tracyboehrer in #713
• Added AgentInterface attribute and MapAgentEndpoints extensions by @tracyboehrer in #707
• Corrected getting Newtonsoft type information for deserialization of existing data by @tracyboehrer in #708

Full Changelog: v1.3.176...v1.4.83