build(deps): Bump the all group across 1 directory with 4 updates

Bumps the all group with 4 updates in the / directory: [Microsoft.SemanticKernel.Core](https://github.com/microsoft/semantic-kernel), [LangChain.Providers.Amazon.Bedrock](https://github.com/tryAGI/LangChain.Providers), [AWSSDK.Kendra](https://github.com/aws/aws-sdk-net) and [LangChain.Serve.Abstractions](https://github.com/tryAGI/LangChain).


Updates `Microsoft.SemanticKernel.Core` from 1.19.0 to 1.20.0
- [Release notes](https://github.com/microsoft/semantic-kernel/releases)
- [Commits](microsoft/semantic-kernel@dotnet-1.19.0...dotnet-1.20.0)

Updates `LangChain.Providers.Amazon.Bedrock` from 0.15.1-dev.78 to 0.15.2
- [Commits](https://github.com/tryAGI/LangChain.Providers/commits/v0.15.2)

Updates `AWSSDK.Kendra` from 3.7.400.20 to 3.7.400.21
- [Changelog](https://github.com/aws/aws-sdk-net/blob/main/SDK.CHANGELOG.MD)
- [Commits](https://github.com/aws/aws-sdk-net/commits)

Updates `LangChain.Serve.Abstractions` from 0.15.1-dev.126 to 0.15.1-dev.129
- [Release notes](https://github.com/tryAGI/LangChain/releases)
- [Commits](https://github.com/tryAGI/LangChain/commits)

---
updated-dependencies:
- dependency-name: Microsoft.SemanticKernel.Core
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
- dependency-name: LangChain.Providers.Amazon.Bedrock
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
- dependency-name: AWSSDK.Kendra
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
- dependency-name: LangChain.Serve.Abstractions
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
...

Signed-off-by: dependabot[bot] <support@github.com>

src/Directory.Packages.props

@@ -3,7 +3,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
-    <PackageVersion Include="AWSSDK.Kendra" Version="3.7.400.20" />
+    <PackageVersion Include="AWSSDK.Kendra" Version="3.7.400.21" />
     <PackageVersion Include="DotNet.ReproducibleBuilds" Version="1.2.25" />
     <PackageVersion Include="Elastic.Clients.Elasticsearch" Version="8.14.2" />
     <PackageVersion Include="FluentAssertions" Version="6.12.1" />
@@ -15,8 +15,8 @@
     <PackageVersion Include="LangChain.Core" Version="0.15.0" />
     <PackageVersion Include="LangChain.DocumentLoaders.Pdf" Version="0.15.0" />
     <PackageVersion Include="LangChain.Polyfills" Version="0.15.0" />
-    <PackageVersion Include="LangChain.Providers.Amazon.Bedrock" Version="0.15.1-dev.78" />
-    <PackageVersion Include="LangChain.Serve.Abstractions" Version="0.15.1-dev.126" />
+    <PackageVersion Include="LangChain.Providers.Amazon.Bedrock" Version="0.15.2" />
+    <PackageVersion Include="LangChain.Serve.Abstractions" Version="0.15.1-dev.129" />
     <PackageVersion Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="3.3.4" />
     <PackageVersion Include="Microsoft.Data.Sqlite.Core" Version="8.0.8" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
@@ -31,7 +31,7 @@
     <PackageVersion Include="Microsoft.SemanticKernel.Connectors.Redis" Version="1.16.2-alpha" />
     <PackageVersion Include="Microsoft.SemanticKernel.Connectors.Sqlite" Version="1.15.1-alpha" />
     <PackageVersion Include="Microsoft.SemanticKernel.Connectors.Weaviate" Version="1.16.2-alpha" />
-    <PackageVersion Include="Microsoft.SemanticKernel.Core" Version="1.19.0" />
+    <PackageVersion Include="Microsoft.SemanticKernel.Core" Version="1.20.0" />
     <PackageVersion Include="Moq" Version="4.20.72" />
     <PackageVersion Include="MSTest.TestAdapter" Version="3.5.1" />
     <PackageVersion Include="MSTest.TestFramework" Version="3.5.1" />