Fluentassertions.Analyzers 0.13.0 gives warning with net6.0

[undefined77]

Description

Fluentassertions.Analyzers 0.12.0 or 0.13.0 gives warning with net6.0

Complete minimal example reproducing the issue

Add FluentAssertions.Analyzers 0.12.0 or 0.13.0 to a .Net 6.0 project as a NuGet package

Expected behavior:

No warnings

Actual behavior:

Warnings appear during build

Versions

FluentAssertions.Analyzers 0.12.0 or 0.13.0
.Net 6.0

[Meir017]

@undefined77 version 0.16.0 just released with this fixed