build(deps): Bump the all group with 2 updates

Bumps the all group with 2 updates: [AWSSDK.Kendra](https://github.com/aws/aws-sdk-net) and [LangChain.Serve.Abstractions](https://github.com/tryAGI/LangChain).


Updates `AWSSDK.Kendra` from 3.7.400.18 to 3.7.400.19
- [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.120 to 0.15.1-dev.125
- [Release notes](https://github.com/tryAGI/LangChain/releases)
- [Commits](https://github.com/tryAGI/LangChain/commits)

---
updated-dependencies:
- 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="3.7.400.18" />
+    <PackageVersion Include="AWSSDK.Kendra" Version="3.7.400.19" />
     <PackageVersion Include="DotNet.ReproducibleBuilds" Version="1.2.25" />
     <PackageVersion Include="Elastic.Clients.Elasticsearch" Version="8.14.2" />
     <PackageVersion Include="FluentAssertions" Version="6.12.1" />
@@ -16,7 +16,7 @@
     <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.120" />
+    <PackageVersion Include="LangChain.Serve.Abstractions" Version="0.15.1-dev.125" />
     <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" />