Bump Amazon.Lambda.RuntimeSupport from 1.8.8 to 1.9.0 (#928)

Bumps [Amazon.Lambda.RuntimeSupport](https://github.com/aws/aws-lambda-dotnet) from 1.8.8 to 1.9.0.
- [Changelog](https://github.com/aws/aws-lambda-dotnet/blob/master/RELEASE.CHANGELOG.md)
- [Commits](https://github.com/aws/aws-lambda-dotnet/commits)

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

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

Directory.Packages.props

@@ -3,7 +3,7 @@
     <PackageVersion Include="Alexa.NET" Version="1.22.0" />
     <PackageVersion Include="Amazon.Lambda.Core" Version="2.1.0" />
     <PackageVersion Include="Amazon.Lambda.Logging.AspNetCore" Version="3.1.0" />
-    <PackageVersion Include="Amazon.Lambda.RuntimeSupport" Version="1.8.8" />
+    <PackageVersion Include="Amazon.Lambda.RuntimeSupport" Version="1.9.0" />
     <PackageVersion Include="Amazon.Lambda.Serialization.Json" Version="2.1.1" />
     <PackageVersion Include="Amazon.Lambda.TestUtilities" Version="2.0.0" />
     <PackageVersion Include="AWSSDK.Lambda" Version="3.7.200.1" />