Add Windows i686 test failure with GCC 7.4 to README

Co-authored-by: Jeremie Vandenplas <[email protected]>

Author: awvwgk

Diff for: README.md

@@ -87,6 +87,7 @@ A list of tested compilers which are currently not working and the respective is
 
 Name | Version | Platform | Architecture | Status
 --- | --- | --- | --- | ---
+GCC Fortran | 7.4 | Windows 10 | i686 | [#296](https://github.com/fortran-lang/stdlib/issues/296)
 NVIDIA HPC SDK | 20.7, 20.9, 20.11 | Manjaro Linux 20 | x86_64 | [#107](https://github.com/fortran-lang/stdlib/issues/107)
 NAG | 7.0 | RHEL | x86_64 | [#108](https://github.com/fortran-lang/stdlib/issues/108)
 Intel Parallel Studio XE | 16, 17, 18 | OpenSUSE | x86_64 | failed to compile