Bump Swashbuckle.AspNetCore from 6.9.0 to 9.0.4

---
updated-dependencies:
- dependency-name: Swashbuckle.AspNetCore
  dependency-version: 9.0.4
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/GraphEventGrid.csproj

@@ -21,7 +21,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.9.0" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="9.0.4" />
   </ItemGroup>
 
 </Project>