GHA Windows version 20201116.1 breaks build

[hugovk]

The GHA Windows build has started failing on master:

Finished generating code
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\VC\\Tools\\MSVC\\14.28.29333\\bin\\HostX86\\x86\\link.exe' failed with exit status 1257

Last pass: https://github.com/python-pillow/Pillow/actions/runs/370215236

Version: 20201108.1
Included Software: https://github.com/actions/virtual-environments/blob/win19/20201108.1/images/win/Windows2019-Readme.md

First fail: https://github.com/python-pillow/Pillow/actions/runs/376064850

Version: 20201116.1
Included Software: https://github.com/actions/virtual-environments/blob/win19/20201116.1/images/win/Windows2019-Readme.md

Change included software: actions/runner-images@9a16e36#diff-816219d3c9f30fcc1c40f88ca826c1662bf99eded781c1b419dd2dfb577ae227

[hugovk]

First error:

2020-11-21T12:51:28.1169099Z ConvertYCbCr.c
2020-11-21T12:51:28.3157967Z fatal error C1047: The object or library file 'D:\a\Pillow\Pillow\winbuild\build\lib\lcms2_static.lib' was created by a different version of the compiler than other objects like 'build\temp.win-amd64-3.6\Release\src\_imagingcms.obj'; rebuild all objects and libraries with the same compiler
2020-11-21T12:51:28.3164554Z LINK : fatal error LNK1257: code generation failed

[nulano]

I've created #5052 which should fix the error by changing the cache key.
I'll try to add the compiler version to the key hopefully tomorrow.