Bump Npgsql in /sample/Tracker.PostgreSQL/Tracker.PostgreSQL.Database

Bumps [Npgsql](https://github.com/npgsql/npgsql) from 6.0.1 to 6.0.11.
- [Release notes](https://github.com/npgsql/npgsql/releases)
- [Commits](npgsql/npgsql@v6.0.1...v6.0.11)

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

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

Author: dependabot[bot]

sample/Tracker.PostgreSQL/Tracker.PostgreSQL.Database/Tracker.PostgreSQL.Database.csproj

@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="dbup-postgresql" Version="4.5.0" />
-    <PackageReference Include="Npgsql" Version="6.0.1" />
+    <PackageReference Include="Npgsql" Version="6.0.11" />
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="6.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="6.0.0" />
   </ItemGroup>