chore(release): 2.2.0 [skip ci]

# [2.2.0](https://gitlab.com/to-be-continuous/dotnet/compare/2.1.1...2.2.0) (2025-12-20)

### Features

* implement mutation testing with Stryker.NET ([84c1cebf](https://gitlab.com/to-be-continuous/dotnet/commit/84c1cebf53a86024982ce3ca4b0b63d6f75445b9))
* implement SAST using security-code-scan ([7bac4fc7](https://gitlab.com/to-be-continuous/dotnet/commit/7bac4fc71cb8b48d0fce98a5aaf254f33846ccf5))
* implement semgrep SAST ([ccb1be2b](https://gitlab.com/to-be-continuous/dotnet/commit/ccb1be2b70c69a0c0f74f6d10e7cbcf63348858a))