[llvm] [CI][Github] Version pin packages in windows container (PR #148319)

[Aiden Grossman via llvm-commits]

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@@ -39,11 +39,13 @@ RUN regsvr32 /S "C:\BuildTools\DIA SDK\bin\amd64\msdia140.dll" & \
 
 # install tools as described in https://llvm.org/docs/GettingStartedVS.html
 # and a few more that were not documented...
-RUN choco install -y ninja git sccache
 # Pin an older version of Python; the current Python 3.10 fails when
 # doing "pip install" for the other dependencies, as it fails to find libxml
 # while compiling some package.
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boomanaiden154 wrote:

Ah, sorry for the misunderstanding.

I've added some additional text to describe why we're version pinning the rest of the packages.

https://github.com/llvm/llvm-project/pull/148319