build(deps): bump Amazon.Lambda.Core from 2.3.0 to 2.5.0 (#160)

Bumps [Amazon.Lambda.Core](https://github.com/aws/aws-lambda-dotnet) from 2.3.0 to 2.5.0.
- [Changelog](https://github.com/aws/aws-lambda-dotnet/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-lambda-dotnet/commits)

---
updated-dependencies:
- dependency-name: Amazon.Lambda.Core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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test/SimpleAPI.Tests/SimpleAPI.Tests.csproj

@@ -16,7 +16,7 @@
     </Content>
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Amazon.Lambda.Core" Version="2.3.0" />
+    <PackageReference Include="Amazon.Lambda.Core" Version="2.5.0" />
     <PackageReference Include="Amazon.Lambda.TestUtilities" Version="2.0.0" />
     <PackageReference Include="Amazon.Lambda.APIGatewayEvents" Version="2.7.1" />
     <PackageReference Include="AWSSDK.Extensions.NETCore.Setup" Version="3.7.301" />