Bump Npgsql from 6.0.10 to 6.0.11 in /src/protagonist/DLCS.Repository

Bumps [Npgsql](https://github.com/npgsql/npgsql) from 6.0.10 to 6.0.11.
- [Release notes](https://github.com/npgsql/npgsql/releases)
- [Commits](npgsql/npgsql@v6.0.10...v6.0.11)

---
updated-dependencies:
- dependency-name: Npgsql
  dependency-type: direct:production
...

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

src/protagonist/DLCS.Repository/DLCS.Repository.csproj

@@ -20,7 +20,7 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.1" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="6.0.0" />
     <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.EntityFrameworkCore" Version="6.0.5" />
-    <PackageReference Include="Npgsql" Version="6.0.10" />
+    <PackageReference Include="Npgsql" Version="6.0.11" />
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.22" />
     <PackageReference Include="SSH.NET" Version="2020.0.2" />
     <PackageReference Include="Z.EntityFramework.Plus.EFCore" Version="6.20.1" />