[BUG] 'Generation failed for csharp' from generate-samples.sh in master

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

I am not able to follow steps given in the PR template ('run ./bin/generate-samples.sh').

This should not have passed the CI checks. The script fails in just 30 seconds!

openapi-generator version

7.19.0-SNAPSHOT

OpenAPI declaration file content or url

Generation Details

Steps to reproduce

To reproduce, run with today's 'master'

git switch -d 19945d909f32fb44b1d4f52f927c8f8116931cd1
./bin/generate-samples.sh ./bin/configs/*.yaml

Result:

[pool-1-thread-14] Generation failed for csharp: (IllegalArgumentException) The input (net10.0) contains Invalid .NET framework version: net10.0. List of supported versions: netstandard1.3, netstandard1.4, netstandard1.5, netstandard1.6, netstandard2.0, netstandard2.1, net47, net48, net8.0, net9.0
java.lang.IllegalArgumentException: The input (net10.0) contains Invalid .NET framework version: net10.0. List of supported versions: netstandard1.3, netstandard1.4, netstandard1.5, netstandard1.6, netstandard2.0, netstandard2.1, net47, net48, net8.0, net9.0
        at org.openapitools.codegen.languages.CSharpClientCodegen.processOpts(CSharpClientCodegen.java:818)
        at org.openapitools.codegen.DefaultGenerator.configureGeneratorProperties(DefaultGenerator.java:252)
        at org.openapitools.codegen.DefaultGenerator.generate(DefaultGenerator.java:1277)
        at org.openapitools.codegen.cmd.GenerateBatch$GenerationRunner.run(GenerateBatch.java:227)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)

Related issues/PRs

Suggest a fix

Start by running bin/generate-samples.sh ./bin/configs/*.yaml at the reported revision, then inspect CSharpClientCodegen.java around processOpts and the generation configuration named in the stack trace. Compare the requested net10.0 value with the supported framework versions. Done means the C# generation completes successfully when the sample script is run.