CI: Validate .NET 11

[amotl]

Problem

error: NU1202: Package Npgsql.EntityFrameworkCore.PostgreSQL 11.0.0-preview.1 is not compatible with net10.0 (.NETCoreApp,Version=v10.0). Package Npgsql.EntityFrameworkCore.PostgreSQL 11.0.0-preview.1 supports: net11.0 (.NETCoreApp,Version=v11.0)
error: Package 'Npgsql.EntityFrameworkCore.PostgreSQL' is incompatible with 'all' frameworks in project '/home/runner/work/cratedb-examples/cratedb-examples/by-language/csharp-efcore/demo.csproj'.
Error: Process completed with exit code 1.

-- CI run #21892205177

-- Build status

[coderabbitai]

Walkthrough

This pull request expands C# CI testing matrices to include .NET 11.x support. It adds exclusion rules in GitHub Actions workflows to prevent testing incompatible combinations of .NET versions with Npgsql versions.

Changes

Cohort / File(s)	Summary
EF Core Workflow .github/workflows/lang-csharp-efcore.yml	Adds 11.x dotnet-version to matrix. Introduces explicit excludes for: .NET 10 with Npgsql 10.0.0+, .NET 11 with Npgsql 10.0.0, and .NET 10 with prerelease Npgsql.
Npgsql Workflow .github/workflows/lang-csharp-npgsql.yml	Adds 11.x dotnet-version to matrix. Excludes .NET 11 from testing against Npgsql 8.* and 9.* versions.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Possibly related PRs

• CI/.NET: Fix test matrix for EF Core integration tests #1279 — Modifies the same EF Core CI workflow file with .NET–Npgsql compatibility adjustments and exclusion rule handling.
• .NET: Npgsql 10 has been released #1276 — Updates C# workflow matrices to handle version compatibility between Npgsql and .NET in similar testing scenarios.
• .NET/CI: Improve testing, also against pre-release versions of Npgsql #1257 — Adjusts CI matrices in both modified workflow files with version compatibility and exclusion logic.

Suggested reviewers

• seut
• surister

Poem

🐰 A rabbit hops through CI gates so bright,
.NET eleven joins the fight!
With Npgsql rules to keep in place,
Incompatible pairs find no space.
Tests shall run with harmony and cheer! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'CI: Validate .NET 11' directly matches the PR's main objective of validating .NET 11 in CI workflows, as evidenced by the changes adding 11.x dotnet-version entries to both workflow files.
Description check	✅ Passed	The description clearly explains the problem motivating the PR: package incompatibility between Npgsql.EntityFrameworkCore.PostgreSQL 11.0.0-preview.1 and net10.0, which directly relates to the changeset's purpose of adding .NET 11 validation and managing version matrix compatibility.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch ci-dotnet11

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No actionable comments were generated in the recent review. 🎉

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