Postgres healthcheck failing

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Describe the bug

Postgres health-checks are failing with "Failed to connect to ....", even though the database server is up and running, and I can connect to it just fine, from both my local system and inside containers.

Connected from datagrip (on local machine):

Connected from pgadmin running in container (by aspire, `.WithPgAdmin()`):

### Expected Behavior

Health checks should pass.

### Steps To Reproduce

I have a newly formatted computer, so I'm not sure how to reproduce elsewhere. I'm using podman desktop, rootfull VM with default (no userspace) networking. I'm running wsl with mirrored networking:

### Exceptions (if any)

_No response_

### .NET Version info

```
.NET SDK:
Version: 10.0.103
Commit: c2435c3e0f
Workload version: 10.0.100-manifests.c992be6d
MSBuild version: 18.0.11+c2435c3e0

Runtime Environment:
OS Name: Windows
OS Version: 10.0.26200
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\10.0.103\

.NET workloads installed:
There are no installed workloads to display.
Configured to use workload sets when installing new manifests.
No workload sets are installed. Run "dotnet workload restore" to install a workload set.

Host:
Version: 10.0.3
Architecture: x64
Commit: c2435c3e0f

.NET SDKs installed:
8.0.418 [C:\Program Files\dotnet\sdk]
9.0.311 [C:\Program Files\dotnet\sdk]
10.0.103 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 8.0.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 10.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.24 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 10.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 8.0.24 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.13 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 10.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
C:\Users\ALEHEI\hub\altinn-register\global.json

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download
```

### Anything else?

This used to work before formatting. I didn't use to run wsl with mirrored networking though - though pgadmin in container used to not work, so I wanted to try out mirrored networking to see if that was solved. Not sure if that's what causing this new issue, but the new issue is bigger 😛