Bump Swashbuckle.AspNetCore from 9.0.3 to 9.0.4

---
updated-dependencies:
- dependency-name: Swashbuckle.AspNetCore
  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]

Directory.Packages.props

@@ -19,7 +19,7 @@
   <ItemGroup Label="Samples">
     <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="8.0.19" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="9.0.8" />
-    <PackageVersion Include="Swashbuckle.AspNetCore" Version="9.0.3" />
+    <PackageVersion Include="Swashbuckle.AspNetCore" Version="9.0.4" />
   </ItemGroup>
   <ItemGroup Label="Tests">
     <PackageVersion Include="coverlet.collector" Version="6.0.4" />