False-Positive duplicate matrix config

[DNKpp]

Hello,
I'm using actionlint online checker from time to time. It's very helpful to me, thank you very much.

But recently I got the feeling, that there may be a bug in the duplicate checker.

- prefix: "Windows 2022"
  os: "windows-2022"
  compiler_name: "msvc"
  compiler_version: "v143"
  cmake_generator: "Visual Studio 17 2022"

- prefix: "Windows 2022"
  suffix: "/Gv"
  os: "windows-2022"
  compiler_name: "msvc"
  compiler_version: "v143"
  cmake_generator: "Visual Studio 17 2022"
  default_call_convention: "vectorcall"

It claims, that these two matrix entries would be a duplicate of each other, which they are not (at least from my knowledge).

duplicate value {"cmake_generator": "Visual Studio 17 2022", "compiler_name": "msvc", "compiler_version": "v143", "default_call_convention": "vectorcall", "os": "windows-2022", "prefix": "Windows 2022", "suffix": "/Gv"} is found in matrix "config". the same value is at line:182,col:13matrix

When I change the order, the error is gone, which leads me to the conclusion, that the duplicate check does only check whether any previous entry is a subset of the new element (not actually the same).

Here is a link to the specific file.