[release/9.x] Bump Microsoft.NETCore.DotNetAppHost

Bumps [Microsoft.NETCore.DotNetAppHost](https://github.com/dotnet/runtime) from 9.0.1 to 9.0.4.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v9.0.1...v9.0.4)

---
updated-dependencies:
- dependency-name: Microsoft.NETCore.DotNetAppHost
  dependency-version: 9.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Diff for: eng/dependabot/net9.0/Versions.props

@@ -10,7 +10,7 @@
     <!-- Microsoft.Extensions.Logging.Console -->
     <MicrosoftExtensionsLoggingConsole90Version>9.0.1</MicrosoftExtensionsLoggingConsole90Version>
     <!-- Microsoft.NETCore.App -->
-    <MicrosoftNETCoreApp90Version>9.0.1</MicrosoftNETCoreApp90Version>
+    <MicrosoftNETCoreApp90Version>9.0.4</MicrosoftNETCoreApp90Version>
     <!-- System.Text.Json -->
     <SystemTextJson90Version>9.0.0</SystemTextJson90Version>
   </PropertyGroup>