Powershell Publish-Module to Powershell Gallery fails after creating Nuget Package - powershell

Question

I am trying to publish a new version of a Powershell module to the Powershell Gallery by using
Publish-Module -Name "Nuttercode-PRTG" -NuGetApiKey $apiKey -Verbose -RequiredVersion 1.4
The module .psm1 and .psd1 files can be found here.
After dotnet.exe created the package in {myUserDir}\AppData\Local\Temp\{random numbers}\Nuttercode-PRTG it reports:
VERBOSE: finished running C:\Program Files\dotnet\dotnet.exe with exit code 0
VERBOSE: Created Nuget Package
VERBOSE: Successfully created nuget package at
Write-Error: Failed to publish module 'Nuttercode-PRTG': 'Cannot bind argument to parameter 'NupkgPath' because it is an empty string.'.
Afterwards the temp-folder gets deleted. To me this sounds like an internal problem of Publish-Module or dotnet.exe, but I have no idea what is going on or if I am doing something very wrong myself. I also created a new api key just in case but it did not affect the result.
I am using Windows 10 20H2 (Build 19042.1469), Powershell 7.2.2, PowerShellGet 2.2.5, and dotnet.exe 6.0.201. I am able to replicate the problem on another computer using the same command and arguments using Windows 11 21H2 (Build 22000.556), Powershell 7.2.1, PowershellGet 2.2.5, and dotnet.exe 5.0.102.