Package Dependencies: Bump Testcontainers and Testcontainers.PostgreSql

Bumps Testcontainers from 4.0.0 to 4.6.0
Bumps Testcontainers.PostgreSql from 4.0.0 to 4.6.0

---
updated-dependencies:
- dependency-name: Testcontainers
  dependency-version: 4.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: testcontainers
- dependency-name: Testcontainers.PostgreSql
  dependency-version: 4.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: testcontainers
...

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

Author: dependabot[bot]

QueryKit.IntegrationTests/QueryKit.IntegrationTests.csproj

@@ -17,8 +17,8 @@
         <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.0" />
         <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="9.0.0" />
         <PackageReference Include="CleanMoq" Version="1.0.0" />
-        <PackageReference Include="Testcontainers" Version="4.0.0" />
-        <PackageReference Include="Testcontainers.PostgreSql" Version="4.0.0" />
+        <PackageReference Include="Testcontainers" Version="4.6.0" />
+        <PackageReference Include="Testcontainers.PostgreSql" Version="4.6.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
         <PackageReference Include="xunit" Version="2.9.2" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">