Bump Npgsql in /Tests/StandardRepository.PostgreSQL.IntegrationTests

Bumps [Npgsql](https://github.com/npgsql/npgsql) from 4.0.7 to 4.0.14.
- [Release notes](https://github.com/npgsql/npgsql/releases)
- [Commits](npgsql/npgsql@v4.0.7...v4.0.14)

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

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

Tests/StandardRepository.PostgreSQL.IntegrationTests/StandardRepository.PostgreSQL.IntegrationTests.csproj

@@ -8,7 +8,7 @@
     <PackageReference Include="Docker.DotNet" Version="3.125.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
     <PackageReference Include="Moq" Version="4.12.0" />
-    <PackageReference Include="Npgsql" Version="4.0.7" />
+    <PackageReference Include="Npgsql" Version="4.0.14" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.13.0" />
     <PackageReference Include="Shouldly" Version="3.0.2" />