build(deps): Bump Npgsql.EntityFrameworkCore.PostgreSQL (#341)

Bumps [Npgsql.EntityFrameworkCore.PostgreSQL](https://github.com/npgsql/efcore.pg) from 9.0.3 to 9.0.4.
- [Release notes](https://github.com/npgsql/efcore.pg/releases)
- [Commits](npgsql/efcore.pg@v9.0.3...v9.0.4)

---
updated-dependencies:
- dependency-name: Npgsql.EntityFrameworkCore.PostgreSQL
  dependency-version: 9.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

ODataExample/ODataExample.csproj

@@ -17,7 +17,7 @@
     </PackageReference>
     <PackageReference Include="NLog" Version="5.4.0" />
     <PackageReference Include="NLog.Web.AspNetCore" Version="5.3.15" />
-    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.3" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="7.3.1" />
   </ItemGroup>