Bump AWSSDK.Core from 3.7.400.16 to 3.7.400.20 (#796)

* Bump AWSSDK.Core from 3.7.400.16 to 3.7.400.20

Bumps [AWSSDK.Core](https://github.com/aws/aws-sdk-net) from 3.7.400.16 to 3.7.400.20.
- [Changelog](https://github.com/aws/aws-sdk-net/blob/main/SDK.CHANGELOG.MD)
- [Commits](https://github.com/aws/aws-sdk-net/commits)

---
updated-dependencies:
- dependency-name: AWSSDK.Core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

* Update changelog

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

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: dependabot[bot] <dependabot[bot]@users.noreply.github.com>
(cherry picked from commit a2360ed)

CHANGELOG.md

@@ -6,7 +6,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### Dependencies
 - Bumps `YamlDotNet` from 16.0.0 to 16.1.0
-- Bumps `AWSSDK.Core` from 3.7.400.11 to 3.7.400.16
+- Bumps `AWSSDK.Core` from 3.7.400.11 to 3.7.400.20
 - Bumps `Fake.Core.SemVer` from 6.1.0 to 6.1.1
 - Bumps `Bogus` from 35.6.0 to 35.6.1
 - Bumps `Fake.Core.Environment` from 6.1.0 to 6.1.1

src/OpenSearch.Net.Auth.AwsSigV4/OpenSearch.Net.Auth.AwsSigV4.csproj

@@ -20,7 +20,7 @@
     <ProjectReference Include="$(SolutionRoot)\src\OpenSearch.Net\OpenSearch.Net.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="AWSSDK.Core" Version="3.7.400.16" />
+    <PackageReference Include="AWSSDK.Core" Version="3.7.400.20" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)'=='net461'">
     <Reference Include="System.Web" />