Bump AWSSDK.ECS from 3.7.102.11 to 3.7.104.15 (#1222)

Bumps [AWSSDK.ECS](https://github.com/aws/aws-sdk-net) from 3.7.102.11 to 3.7.104.15.
- [Release notes](https://github.com/aws/aws-sdk-net/releases)
- [Commits](https://github.com/aws/aws-sdk-net/commits)

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

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src/discovery/aws/Akka.Discovery.AwsApi/Akka.Discovery.AwsApi.csproj

@@ -12,7 +12,7 @@
       <PackageReference Include="Akka.Discovery" Version="$(AkkaVersion)" />
       <PackageReference Include="Akka.Hosting" Version="$(AkkaHostingVersion)" />
       <PackageReference Include="AWSSDK.EC2" Version="3.7.115.1" />
-      <PackageReference Include="AWSSDK.ECS" Version="3.7.102.11" />
+      <PackageReference Include="AWSSDK.ECS" Version="3.7.104.15" />
     </ItemGroup>
 
     <ItemGroup>