Dependency (dependabot/nuget): Bump AWSSDK.Core in /Source (#2839)

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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Source/NETworkManager.Models/NETworkManager.Models.csproj

@@ -26,7 +26,7 @@
         <EmbeddedResource Include="Resources\PSDiscoveryProtocol.psm1"/>
     </ItemGroup>
     <ItemGroup>
-        <PackageReference Include="AWSSDK.Core" Version="3.7.400.16"/>
+        <PackageReference Include="AWSSDK.Core" Version="3.7.400.20"/>
         <PackageReference Include="DnsClient" Version="1.8.0"/>
         <PackageReference Include="IPNetwork2" Version="3.0.667"/>
         <PackageReference Include="Lextm.SharpSnmpLib" Version="12.5.3"/>