Windows CI : downgrade mingw to previously working version

With upgrade of Azure CI runner image on 21st of Sept 2023,
choco brings mingw 12.2.0 and it's somehow incompatible with
msys+neuron installation. So for now, just use previously working
version of mingw.

See PRs #2546 #2547 #2548

ci/win_install_deps.cmd

@@ -48,6 +48,14 @@ if "%MSYS2_ROOT%"=="" set MSYS2_ROOT=C:\msys64
 if not exist "%MSYS2_ROOT%\usr\bin\bash.exe" (
     choco install -y --no-progress msys2 --params="/InstallDir:%MSYS2_ROOT% /NoUpdate /NoPath" || goto :error
 )
+
+:: With upgrade of Azure CI runner image on 21st of Sept 2023,
+:: choco brings mingw 12.2.0 and it's somehow incompatible with
+:: msys+neuron installation. So for now, just use previously working
+:: version of mingw
+choco uninstall -y mingw
+choco install --allow-downgrade -y mingw --version=11.2.0
+
 set PATH=%MSYS2_ROOT%\usr\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%PATH%
 
 :: update pacman cache (sometimes required when new GH/Azure runner images are deployed)