unity il2cpp release builds (#5909)

* unity il2cpp release builds

* Apply suggestions from code review

Co-authored-by: Stefan Jandl <[email protected]>

* Update src/platforms/unity/configuration/il2cpp.mdx

* Update src/platforms/unity/configuration/il2cpp.mdx

Co-authored-by: Isabel <[email protected]>

Co-authored-by: Stefan Jandl <[email protected]>
Co-authored-by: Isabel <[email protected]>

Author: 3 people

src/platforms/unity/configuration/il2cpp.mdx

@@ -4,11 +4,7 @@ description: "Learn how the SDK provides line numbers to issues from IL2CPP buil
 sidebar_order: 10
 ---
 
-<Note>
-
-This feature is available from Unity versions `2020.3` and `2021.3` onwards. We are running tests in CI against the current LTS, starting from `2020.3.37f1` and `2021.3.6f1`.
-
-</Note>
+Sentry can provide you with line numbers on C# exceptions in **release and development builds** with IL2CPP, on Unity versions `2020.3`, `2021.3`, and later.
 
 Unity provides you the option to select [IL2CPP](https://docs.unity3d.com/Manual/IL2CPP.html) as your scripting backend. This leads to C++ code being generated from your compiled C# (IL) code, hence the name `IL to CPP`.